Our Oceans Aren’t Doomed… Yet? | SciShow News

[♪ INTRO] Last week, the United Nations’ Intergovernmental
Panel on Climate Change released a Special Report on the Ocean and
Cryosphere in a Changing Climate and, surprise! Things don’t look great. But it’s not all doom and gloom. The report also lays out the best ways we
can deal with the negative impacts moving forward. The IPCC special report compiles data from
around 7,000 scientific studies to assess how the world’s ice and oceans
are faring under our changing climate. And a lot of it is dedicated to the things climate
scientists have been warning about for decades: glaciers and ice sheets are melting, sea levels
are rising, precipitation is increasing, and everything is projected to get worse in
the future. That’s not all, though. The bad news is we’re already seeing a lot
of some of the economic effects of all this change. For example, melting glaciers not only lead
to increased risks of avalanches and floods, but also appear to be damaging tourism in
places like national parks and ski resorts that owe their popularity to snowy peaks. And warming oceans aren’t just bad for fish,
they’re also bad for the people who eat fish. Warmer water holds less oxygen and doesn’t
mix as well with the cold, deep, nutrient-rich water, so our seafood
is getting less oxygen and less nutrients. Already, these changes are causing some fish
populations to dwindle or relocate, and as these impacts worsen, they could severely
impact coastal fishing industries. And that’s not the only impact on our food,
either. More melting ice means more runoff of meltwater
into the ocean, and this runoff carries contaminants like
mercury that can build up to toxic levels in fish. So seafood safety is becoming more of a concern. On top of that, warmer waters aid the growth
of dangerous bacteria, and the report noted that the waterborne illnesses
that bacteria cause are already becoming more common in some places
like Arctic coastal communities. On the upside, the report also details lots
of things we can do to help. As always, the most important thing is to
limit carbon emissions and reduce pollution. But the report also shines a spotlight on
mitigation: handling the side effects already happening. This includes things like protecting and restoring
ecosystems, safeguarding coastal communities against flooding,
and carefully managing natural resources. And one of the report’s major messages is
the importance of public education and community involvement. Around the world, communities have succeeded
in getting citizens from all levels of society involved in planning and implementing strategies
to mitigate climate change. That’s great, and the kind of thing we need
more of. In particular, the report recommends that
we pay closer attention to underserved voices and combine scientific knowledge with local
Indigenous knowledge to come up with strategies that benefit everyone
in the decades to come. It’s easy to get discouraged when hearing
about all the harmful impacts of climate change, but the report makes it clear that this isn’t
necessarily the end of the world. The good news is we have the tools we need
to handle this; we’ve just got to work together, because
what we do now will determine what our future looks like. And here’s some more good news: scientists may be one step closer to a cure
for the common cold. A new study published this month in the journal
Nature Microbiology has identified a protein in our cells that
might be the key to defeating enteroviruses. This group of viruses is responsible for a
variety of diseases, from rare neurological conditions to familiar
nuisances like the common cold. And they’ve proven especially difficult
to deal with. Not only are these viruses many and varied,
they adapt quickly, making it difficult to develop lasting drug
treatments for them. That’s one reason why the common cold is
so common. Instead of looking for treatments that target
the viruses, some scientists are looking for treatments
that target the human host. Viruses work by hijacking our cellular machinery. Stop that hijacking, and you prevent the illness. In this study, the researchers used CRISPR
gene editing to identify which proteins in our cells the
viruses latch onto. Basically, they cut chunks of DNA out of cells and then watched how the cells responded to
viral infections. That brought their attention to a protein
named SETD3. It helps accelerate muscle contraction, and it also helps enteroviruses multiply inside
our cells, apparently. To confirm this, the researchers engineered
human and mouse cells with their SETD3 genes turned off, and sure
enough, both cold-causing enteroviruses and neurological
enteroviruses were unable to gain a foothold in those cells. They even bred living mice without SETD3,
and not only were the mice resistant to viral infection, they also showed no obvious negative side
effects of having the protein shut off. So, clearly, we should just get this protein
out of our bodies and we will cure ourselves of colds and other
diseases. Easy peasy. Except, just because lab mice in this study
did okay without SETD3 does not mean that we will do okay without it. A study earlier this year found that female
mice without SETD3 had smaller litters, and human uterine cells without it couldn’t
contract properly. So more research is needed to understand just
how important this protein is to us before we go about destroying it to thwart
disease. Still, knowing that this protein is important
to these viruses is a huge piece of intel. Now we need to figure out why it matters so
much. Because if it does turn out to be the viruses’
Achilles’ heel, medical researchers just might be able to
use that knowledge to develop effective treatments for some of
the most diverse and common viruses that ail us. Too bad they couldn’t figure all that out
before we entered cold and flu season. Luckily, viruses aren’t all that October
has to offer. It means a new SciShow Pin! This month, we have the lovely Sputnik Satellite
pin for sale. It’s a stylish addition to any autumnal
outfit, and will surely wow the crowds at your local
pumpkin patch or harvest festival. But don’t wait too long! This pin is only available during the month
of October. Check it out for yourself at the link in the description
or by perusing the merchandise shelf below. [♪ OUTRO]

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