Being a part of the March for Science was surreal. Despite the rain, the streets surrounding the National Mall were flooded with scientists protesting the administration’s threat to science and science funding. And it wasn’t just regular people (like me). Climate Central’s chief scientist, Heidi Cullen, spoke to a soggy crowd about the value of extreme weather reporting and attribution science. Jason Box, climate researcher (and an important part of my favorite climate film), spoke to the importance of melting Greenland on the world’s coastlines (in case you didn’t know, sea level rise is coming for us all, and estimates keep getting more extreme), while Bill Nye stressed to lawmakers that “science is for all.”
Signs here overwhelmingly pointed to renewables, rising seas, and the importance of protecting the Earth.
I marched for science and a clean planet, and for everyone in my life who is dedicated to science (including us science communicators!). The March for Science organizers are aiming to make this a movement, and I’ll be there every step of the way.
“If we can’t save this ecosystem, are we gonna have the courage to save the next one down the line?”
Imagine going to your favorite place in the world, only to find it was completely devastated.
That’s what producers, divers, and everyone involved in Chasing Coral found.
The film Chasing Coral follows the same structure as its predecessor Chasing Ice: a documentary produced to highlight something we’re going to lose (or have already lost) because of climate change.
After watching Chasing Ice, I felt hope. But after watching Chasing Coral, I feel despair.
In 2012, Chasing Ice made me feel urgency — I knew climate change was real, and this film was made (in my eyes) to show people the effects of this global issue. I felt equipped (with tons of icy ammo) to shout about climate change from the rooftops!
But now, in 2017, Chasing Coral almost made me cry. Because humans have dumped carbon into the atmosphere for so long, and have delayed on climate action, we’re finally losing something we cannot replace — the world’s coral. And the documentary film crew spent months documenting the damage.
Coral bleaching all starts with the rise in global temperatures, and where that heat is stored. The ocean takes up 93 percent of the world’s heat, and without it, we’d already be fried on land.
Bleaching is a side effect of the ocean’s heat. When the ocean is too hot, corals get stressed out, and the algae living on the coral depart (or are ejected), causing the symbiotic relationship between algae and coral tissue to waste. When the algae is gone, coral loses their source of food, and bleaches. Not all bleached coral is dead, but once coral is bleached, it’s less likely for the coral to return to a healthy state.
The impacts continue on. This week, scientists announced the second coral bleaching event in a row in the Great Barrier Reef. Corals around the globe have been subject to bleaching in recent decades, too, not just in Australia. More heat continues to pile up in the ocean, even turning the Arctic into the Atlantic.
“The ocean controls everything. Without a healthy ocean, we do not have a healthy planet.”
Scientists in the film are concerned that continual bleaching events will wreck coral and their habitats for good — if they always bleach, they will never have enough food, and will just die off. This would lead to an ecosystem collapse, where entire classes of organisms could go extinct.
Ocean scientists are sounding the alarm. And what’s their solution? Stop using fossil fuels now.
Is losing the Great Barrier Reef going to wake up the world?
But Leonardo DiCaprio wants to bring solutions to this scary problem. And through “Before the Flood,” the UN Messenger of Peace does just that. These are the 5 most important solutions he made cases for in his documentary (which you can watch on YouTube).
1. Palm oil is really bad for the climate. But you can help.
Palm oil is really terrible for the climate because it fuels deforestation. Deforestation prevents trees from doing their job (acting as a carbon sink), especially when “peatlands hold up to 28 times as much carbon as rainforests,” Ensia reports. Burning forests for deforestation also release carbon into the atmosphere in the form of smoke.
Back to palm oil, though. It’s used in pretty much everything, from lipstick to chocolate to detergent. It can be grown almost anywhere, and is really cheap to produce, making large corporations a lot of money.
That’s where you come in. If enough people worldwide boycott (or cut back on) consumption of products containing palm oil, these companies wouldn’t have to clear-cut as many forests to harvest it, which would allow trees to remain in place and do their jobs as carbon sinks.
2. Methane is also terrible (but again, you can help).
Methane is a greenhouse gas that contributes to climate change (like carbon dioxide does) but is about 34 times more potent than CO2 over a 100 year period (cutting the science jargon — it’s worse than CO2). New studies have pointed to cattle, landfills and agriculture as huge sources of methane in the U.S.
So how can we help? In short – eat less beef. In “Before the Flood,” DiCaprio (along with Dr. Gidon Eshel) explains that the largest reason for tropical deforestation is beef farming. This, like palm oil production, removes trees (and in turn, carbon sinks are disrupted).
In a short segment, Eshel explains that in the U.S., 47% of land is used for food production, and of that, 70% is used to grow feed for cattle.
That feed goes to fuel cows, who produce methane through burping while eating (no, really). And as mentioned, methane is way worse for the climate. “Every molecule of methane (CH4) is equivalent to 23 molecules of CO2. And of the methane in the atmosphere, nearly all of it is due to livestock.”
So the seemingly simple solution is cutting down on beef in our diets, switching to another alternative like chicken or just having meat-free days. “Let’s face it — it’s fairly easy to switch your diet from one choice to another,” Eshel explains.
3. 100 gigafactories can serve the entire world renewable energy.
In case you haven’t heard, Elon Musk is building a gigafactory to build his Tesla batteries. When completed, the building will have the largest footprint of any in the world.
Elon Musk chatted with Leonardo DiCaprio about the future of the energy industry and how solar and batteries completely punt the need for energy plants in developing nations
“Batteries are critical to the sustainable energy future,” Musk says in this NatGeo clip..
… in which he also explains how 100 gigafactories could power the ENTIRE WORLD on renewable energy. The whole world. 100 gigafactories. The catch is that Tesla can’t build 100 of them — in order to move to this clean energy/battery future, other corporations will have to follow suit. “If the big industrial countries in China and the U.S. and Europe, the big car companies, if they also do this, then collectively, we can accelerate the transition to renewable energy,” he says. “Unless there’s a price put on carbon, we’re never going to be able to make the transition we need to in time.”
4. A carbon tax should really be considered.
A carbon tax would be a tax on any activity that puts carbon into the atmosphere — everything in the transportation sector (flying, shipping, driving, etc) and energy development (oil, coal, etc). It’s based on the principle that if you tax it, people will consume less (because it’s costing them money).
Gregory Mankiw, econ professor at Harvard, calls a carbon tax the “silver bullet” for climate change — which will cost taxpayers $44 trillion by 2060. So why don’t we have a carbon tax already if it’s such a good idea?
“Politicians don’t always do what professors want them to do,” Mankiw says. “If we want to change the President’s view on a carbon tax, we need to change the public’s view on a carbon tax.”
Side note: You can go on this website and calculate how much you contribute to climate change (hint: if you travel a lot, get ready for a heavy blow…). It also allows you to pay monthly to offset your carbon use.
5. Renewables really are the future.
Elon Musk hits the nail on the head when he says “If government sets the rules to favor sustainable energy, we can get there really quickly.”
“Before the Flood” really focused on renewables as the future of energy, and everyone else in the world agrees. The Paris Agreement has called for investments in renewable energy. Some countries are going carbon neutral (and using LOADS of renewable energy) just because they can (Costa Rica is well on its way, and so is Sweden, and Iceland, and…).
According to a study contracted by the Associated Press, the waters along the coast of Rio are filled with a toxic sludge of raw sewage, “teeming with dangerous viruses and bacteria.” In an amazingly horrible comparison, swimmers need to ingest only three teaspoons of water to be almost certain of contracting a virus, with levels of pollutants “1.7m times what would be considered alarming in the United States and Europe.”
But it’s not just a warning for the visitors — Olympians competing in the bay (sailors, rowers, and open-water swimmers) have had to take extra precautions in the form of antibiotics and anti-pollution microbial suits.
“[The water quality] is a real concern. We’re going to have to be very disciplined about how we’re taking care of ourselves,” said Meghan O’Leary, a member of the U.S. rowing team. “Don’t touch our face if we touch the water. Covering our water bottles with plastic bags. We get splashed a lot. I sit in bow. It’s going to happen. We’re just going to try to control everything we can.”
Unfortunately, the most polluted areas are the points where Olympic rowing and sailing races will take place.
The New York Times writes that a part of Rio’s Olympic bid was to “capture and treat 80 percent of the sewage that flows into Guanabara Bay,” which certainly isn’t happening by the time the Olympics start on Friday.