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The DiscoveryCamp 2018 attendees (Image: supplied)
The DiscoveryCamp 2018 attendees (Image: supplied)

ScienceAugust 20, 2018

Western theory isn’t the only way: celebrating Māori and Pasifika science at DiscoveryCamp

The DiscoveryCamp 2018 attendees (Image: supplied)
The DiscoveryCamp 2018 attendees (Image: supplied)

DiscoveryCamp is inspiring young Māori and Pasifika students to persist with science. Simon Day talks to three graduates about the opportunities the programme has provided.

From studying chemistry in the classroom, suddenly Cha’nel Kaa-Luke (Ngāruahine, Ngāti Ruanui, Ngāti Porou) was in a real lab, learning about quantum computing, the science of social media, and how to detect methamphetamine. This is the hands-on learning of DiscoveryCamp, where Kaa-Luke joined a group of Māori and Pasifika high school students for the annual programme that provides a real understanding of what a career in science looks like. She not only discovered a passion for space science, but she also found a new whānau.  

“I have always had an interest in space and the experience was able to give me more exposure to what might possibly be out there. We also got to experience what the Māori culture was like at Victoria and see how these guys work as a whānau away from home,” says Kaa-Luke.

DiscoveryCamp is a science programme designed for Māori and Pasifika students in their final years of high school to enhance their interest in science, and help carve a path for them in the sector. Each year students gather from all around the country where they have the chance to do real research with the country’s leading scientists. For Kaa-Luke, who is deaf, the experience provided her confidence to follow a future in science, and to achieve something unique for people in her position.


DiscoveryCamp applications are open and close 9 September.

Click here for more information on how to apply.


“Being deaf has definitely influenced my interest in science, mainly because there are not a lot of deaf people I know who are chemists or marine biologists or geologists. It encourages me to strive for something that not a lot of deaf people have done, or not a lot of hearing people believe is possible for us to do. It makes me want to prove them wrong,” she says.

Māori and Pasifika are under-represented in New Zealand across the sciences. From students studying the physical sciences in high school, through the transition to university, to those at PhD level, these communities encounter barriers to their continued involvement in science.

Stevie-Rae Thocolich (Waikato) grew up on the marae speaking only te reo Māori until she was six. Her fascination for science comes from a desire to understand the way things are in the world. It’s always driven her to try new experiences and take opportunities. Her experience at DiscoveryCamp showed her that her two worlds, te ao Māori and science, can come together, and that she has a long future in science.   

“The camp has shown me the different pathways that I can take through science and how they contribute to society. The programme helped us future scientists decide which path will lead to our dreams. I met wonderful people at camp and made four very special friends. The whole experience was amazing, from using high-tech lasers and magnets, to being on the marae,” she says.

According to Jacinta Ruru (Raukawa, Ngāti Ranginui, Ngāti Maniapoto), University of Otago Law professor and co-director of Ngā Pae o te Māramatanga (the Māori Centre of Research Excellence), Māori approaches to science still face significant stigma in New Zealand. This has had a detrimental effect on getting young Māori involved in the sciences.

Programmes like DiscoveryCamp are part of a set of initiatives created to increase the diversity of those involved in the sciences. But they’re also designed to facilitate research that provides solutions for diverse populations, and uses indigenous understandings of science to create those solutions.

Indigenous ways of understanding the world have been marginalised by the scientific community, and it has been one of the barriers to Māori persisting with the sciences. When they do continue their study, those established attitudes have stopped them getting jobs they deserve. For young Māori and Pasifika students this has meant the role models they need just don’t exist, or haven’t got the recognition required to put them in a place of prominence.

“I think as a country we could do more to celebrate and promote Māori who are in the physical sciences who are teaching in the universities and have big research projects, and confidently drawing on both science systems. We need to create ways for our tamariki to continue to be engaged in this field,” Ruru says.

The recognition of an alternative approach does not have to be at the expense of the dominant model. In fact they have huge potential to enhance science’s contribution to New Zealand.

“I believe Māori communities across the country have solutions for us as a country to help us adapt better to major environmental change that are affecting us now. Western science has nothing to lose by recognising indigenous science. We have lots to benefit from if we accept both science systems,” she says.

And DiscoveryCamp has played a significant role in Māori students appreciation of their culture’s place in science. Students like Danielle Sword (Muaūpoko, Te Ati Awa ki Whakarongotai, Ngāti Tahu) who is is in her final semester of a Bachelor of Biomedical Science. She was guided down this path four years ago when her chemistry teacher urged her to attend DiscoveryCamp.  

“I’d say it was one of the key moments in my life. It was an eye opener. It influenced and inspired me to take that science path,” she says.

On the programme she contributed to the work of a PhD student, under Associate Professor Justin Hodgkiss, using gold nanoparticles to test contaminated water. She received hands-on experience on really high-end lab equipment.

“It was a big advancement of knowledge for me, and it was cool to see how something you learn in theory can be put into real practice. I got to know why and how these things worked instead of just how cool they looked,” she says.

Danielle Sword in the lab. Image: supplied

She returned to her final year of school full of confidence in her ability and the possibility of science taking her in the direction she wanted. Then during her tertiary studies she completed two summer internships offered by the MacDiarmid Institute. She went on to contribute to a project where silver clustered nanoparticles were joined onto parts of a human cell which gives it a fluorescent tag, allowing scientists to understand what happens when its environment changes.

“It was an eye opener for the different opportunities the field can offer you, where it can take you and the passions it can open up. It made me feel confident that I could do it. I felt comfortable taking any opportunity that came my way,” she says.

As the completion of her undergraduate degree approaches, Sword is deciding whether to pursue further study. She’s seen the way her understanding of tikanga Māori has informed her understanding of her discipline, and she is interested to pursue research which considers the potential of Māori science to intersect with Western science, and what both cultures have to offer each other.

“For Māori, I do know there is this other side, there’s science, then there is this Māori science. They don’t fully meet together but one of my goals is to bring it into my western science practices,” she says.

The MacDiarmid DiscoveryCamp – Te Tohu Huraina is all expenses paid, including flights, accommodation and meals. Students can choose to attend either the University of Otago or Massey University Palmerston North.

DiscoveryCamp applications are open and close 9 September.

Click here for more information on how to apply.

 

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Giant sharks are no smiling matter for Jason Statham (PHOTO: Warner Bros. Pictures)
Giant sharks are no smiling matter for Jason Statham (PHOTO: Warner Bros. Pictures)

ScienceAugust 19, 2018

When The Meg’s giant prehistoric shark bites, the science bites back

Giant sharks are no smiling matter for Jason Statham (PHOTO: Warner Bros. Pictures)
Giant sharks are no smiling matter for Jason Statham (PHOTO: Warner Bros. Pictures)

The shark in The Meg isn’t big, it’s huge. Prehistoric, millions of years ago huge. But how strong would its bite be? And how fast could it move? Michael Milford and Peter Stratton break down the science.

The Meg is the blockbuster shark monster movie we didn’t realise we needed in our lives. With a cast led by Jason Statham, this is a big-budget version of several megalodon movies that have popped out over the years – including Megalodon (2002) and Jurassic Shark (2012).

Other reviewers have already covered the potential for such a movie to exacerbate public perception issues around endangered shark species.

We’re going to focus instead on other scientific issues raised by the movie, featuring a giant shark that is thankfully now extinct (it lived from about 16 million to 2.6 million years ago).

Warning: mild spoilers and tongue-in-cheek analysis of a fictional movie ahead.

Bite force and glass

Smashable, crackable glass is just such a great action prop for monster movies.

In The Meg, we see the giant shark try out the glass walls of the submerged research station and the deep sea glider vehicle, cracking the glass but not immediately breaking through it.

Marine research isn’t all it cracked up to be (Image: Warner Bros. Pictures)

But is this realistic, given the Meg’s famed bite force of 18 tonnes? (That’s 176,519.7 Newtons.)

First of all, let’s get it out of the way that pressure is not force: pressure depends on the area over which the force is applied. So a bite force is applied through the contact points of the teeth; if the contact area is small, the pressure can be quite high, which is why pointed teeth are better at cutting.

To give the movie a fair go, we can assume that the glass is overdesigned to the same extent as James Cameron’s Deepsea Challenger deep-diving submersible. That craft was tested to an “equivalent full-ocean-depth pressure of 16,500 pounds per square inch or 114,000kPa”.

Massively oversimplifying it (ignoring impact loading, angles of attack, and many other factors), we can work out the minimum contact area required for the glass to hold:

Area = force / pressure
= 176,519.7N / 114,000,000Pa
= 0.0015 m2

That’s a contact area of about 4cm x 4cm spread out over all teeth. From the footage, it seems plausible that there would be this much contact area between the teeth and the glass, meaning the pressure would be insufficient to immediately break through. Score one for human technology, zero for nature.

Verdict: Toothily tenable.

Sucky shark size sensing

We are expected to suspend belief many times throughout the movie, but one scene particularly stretches credulity. The team successfully poisons what they think is the Meg, and haul it onboard using the ship’s crane.

Asking a lot of a little crane (PHOTO: Warner Bros. Pictures)

The problem: the shark they have caught is clearly (at least to us viewers) much smaller than the one they’ve been fighting with for the rest of the movie. The big bad shark is still out there, and the characters are oblivious.

So is this plot-critical mistake plausible?

In the character’s defence, most of their encounters with the shark have been underwater in panicked situations with few reference objects, making absolute size estimation difficult. Real-world studies of large whale sharks have shown that measuring their dimensions is extremely difficult, and have even involved using lasers.

But this plot hole is nothing compared with the larger gaffe in the same scene: the supposed megalodon carcass is strung up on a flimsy crane, as shown in the picture above.

For reference, this is the size of a 50-tonne capacity mobile crane.

Verdict: Suspended shark suspends belief.

Meg motoring along?

According to the film’s production notes, the Meg in the movie can reach speeds of more than 80 knots (150kph), and appears to approach this speed when chasing Jason Statham.

Meg can move! But has slowed down for the buffet in this scene (IMAGE: Warner Bros. Pictures)

One of the fastest current sharks is the Shortfin Mako, which can reach speeds of around 50kph, with more speculative evidence of them topping 70kph in short bursts. The fastest fin whales reach around 40kph.

The fastest submarines reached reported speeds of more than 75kph. Conventional torpedoes top out at around 110kph, whereas Russia’s supercavitating torpedoes could reach 370kph.

Given that the shark appears to be a “normal” shark in all respects other than its size, and without access to any special supercavitation capabilities, its slated top speed seems optimistic at best.

Verdict: Shifty speed specifications.


Related:

The science of Thor: Ragnarok (or how Hulk really can keep his pants on)


Maintaining megalodon’s menu

The Meg in the movie is shown to be really hungry (or just nasty); it appears to eat a lot of people. But how much would it actually need to consume to sustain itself

This cracker has a nice topping! (Warner Bros. Pictures)

An old study calculated that a 943kg shark could survive on 30kg of blubber for about 1.5 months. New studies suggest that this amount of food would only last the shark about 11 days, or an equivalent daily consumption rate of about 3kg.

Dietary requirements of larger sharks scale with mass to the power of about 0.8, so taking a Meg weight of 48 tonnes:

Meg daily intake = 3kg / day × (meg / normal shark weight)0.8
= 3kg / day × (48,000 / 943)0.8
= 70kg/day

So unless the Meg had a strikingly different metabolism, it would probably only need to eat the equivalent of about one person a day. The Meg in the movie eats a lot more than that.

Verdict: Plausibility requires a massively magnified Megalodon metabolism… or perhaps the shark was stocking up for the next month.

Setting shark attack statistics straight

In the movie, the Meg attacks enough people to skew global shark attack statistics for years to come.

But in reality, the average person is incredibly unlikely to be attacked by a shark. Various statistics abound, but the chances of a person being killed by a shark in their lifetime is around 1 in 4 million.

Such statistics taken out of context are relatively meaningless; many people live far from the ocean and rarely go swimming, meaning their chances of attack are effectively zero (unless a waterspout drops sharks on top of them).

The statistics adjusted based on the activity undertaken at the time are significantly higher: one estimate of attack rates (not necessarily fatal) among those scuba diving and snorkelling was more than 10 attacks per 100,000 people performing the activity.

Either way, the chances are very low, but not as low for regular ocean-goers as for a random person plucked from a continent.

Verdict

The Meg combines all the typical monster movie cliches with a few nice touches and some terrifically bad dialogue (so bad it’s good in parts; it had people in our cinema in stitches).

It’s also somewhat liberating that the villain in this movie is not a modern shark but a fantastical creature from millions of years ago, allowing us to be a little more indulgent as viewers. Statham is great, as is ten-year-old rising star Sophia Cai.

The science is generally as dodgy as you would expect for a blockbuster monster movie; the only problem here being the real prehistoric existence of the Meg.

The scriptwriters have stretched plausibility on some of the shark’s general physical capabilities with respect to size (a little bit), speed (probably a lot), and appetite, mainly for dramatic effect.

But turn down your brain and it’s hard to argue with the entertainment value of a big monster spectacle, especially one that features scintillating lines like this:

“That living fossil ate my friend.”

Wow

For a 50 tonne Meg, chasing this tiny dog would be like us picking up a breadcrumb (PHOTO: Warner Bros. Pictures)

This article was originally published on The Conversation. Read the original article.