A number of hypotheses have been used to explain how free oxygen first accumulated in Earth’s atmosphere some 2.4 billion years ago, but a full understanding has proven elusive. Now a new model offers ...

This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged. The key to unlocking the secrets of distant planets starts right here on Earth.

The search for Earth 2.0 has begun in earnest. But there's a huge variety of exoplanets out there, so narrowing down the search to focus valuable telescope time on only the best candidates is critical ...

Every model in Europe’s most advanced climate forecasting system is now projecting El Niño development through 2026, with ...

Astronomers using the James Webb Space Telescope are unraveling the mysteries of TRAPPIST-1e, an Earth-sized exoplanet 40 light years away that could harbor liquid water. Early data suggests hints of ...

When atmospheric chemists Paul Crutzen and John Birks added smoke into their computer models of nuclear war scenarios, they ...

A data visualization showing a map of the Earth with the northern half obscured by purple shading. The southern continents including the tip of Africa, Australia, South America, and Antarctica appear ...

ISSUE THIS EVENING. ALL RIGHT. WE NOW THANK YOU SO MUCH. WE NOW KNOW WE’VE BEEN LOOKING AHEAD TO NEXT WEEK, BUT THERE’S BEEN A BIG CHANGE SINCE YESTERDAY. RIGHT HEATHER. THAT’S ABSOLUTELY RIGHT. SO I ...