- How widespread within NASA is the conviction that human activity is responsible for climate change?
- Michelle Thaller knows. She has worked with hundreds of Earth scientists at NASA who study the climate.
- It's important to note that NASA is an apolitical organization devoted to science, not policy solutions.
Hello, tipping point.
- Esieh Lake is in a part of Alaska that's in the Arctic Circle.
- Each day the lake emits methane at a rate equivalent to about 6,000 cows.
- If more like it are found, it could be an ominous warning of things to come.
A new study shows how one dietary change in the U.S. could make a 46%-plus dent in greenhouse gas reductions.
Methane gases from livestock production is contributing to the acceleration of global warming. Is a plant-based diet a smart way for individuals to curb the effects of climate change?
Make all the jokes you want, says Bill Nye, but methane is a very potent greenhouse gas, and as Earth's population increases so too does the size of the meat industry that caters to it. Demand for meat is growing steeply in developing nations, according to the Heinrich Böll Foundation, and the methane emitted by livestock is undoubtedly contributing atmospheric gases and accelerating global warming. So is a plant-based diet the answer, slashing the demand placed on the meat and dairy industries? Nye finds himself choosing to eat more and more vegetarian dishes, so while he hasn't gone 'full vegan' yet, his awareness of the problem has sparked a reductionist diet. Nye also mentions that agricultural scientists may soon find themselves under public pressure to reduce methane output. One way they might do that? Changing the bacteria in livestock's stomachs so they metabolize food with less methane byproduct. So we could bio-engineer the stomachs of other animals, or we could simply reduce the amount of animal products that go into our own.
The mission might set a precedent for exploring bodies of water on other moons and worlds as well.
Of all the bodies in our solar system, Saturn’s moon Titan is one of the likeliest to harbor life. That’s because it has an atmosphere and its surface is covered by lakes and seas of hydrocarbon. Due to this, NASA has proposed a concept for a mission—plunging a robot-driven, nuclear submarine into Titan’s largest, northerly sea, called Kraken Mare. This body of “water” is 1,000 kilometers (600 miles) wide and 300 meters (1,000 feet) deep. It’s as large as Lake Superior. The concept was announced by cryogenics engineer Jason Hartwig, at NASA’s Innovative Advanced Concepts (NIAC) Symposium, last August.
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