Large amounts of methane have been observed escaping from the seabed off of the northeastern coast of Siberia, emanating from previously-frozen pockets of the powerful greenhouse gas, a “sleeping giant” that threatens to trigger a global warming feedback loop that exacerbates the climate-warming effects of human-produced carbon dioxide emissions. Thisread more

  Earth, at least for now, is the most habitable planet that we’re aware of, having been home to lifeforms for nearly the entirety of the planet’s existence, now boasting a complex and diverse biosphere that is (probably) the envy of the Solar System. But while it’s not hard toread more