Mahmoud Khalil, a Columbia student who helped lead last year’s pro-Palestinian demonstrations, was detained by the Department of Homeland Security in March. Photo: Jeenah Moon/Reuters Columbia ...

Only 15 countries met it – less than 8% of the 194 parties currently signed up to the Paris agreement, which obliges countries to submit new proposals for eliminating emissions every five years.

While a single year above 1.5°C doesn't break the Paris Agreement's long-term goals (a long-term average below 1.5°C), it is a stark warning of the urgent need for emissions reduction. Multiple ...

But Tuesday's agreement between the US and Ukraine over a proposed temporary ceasefire in the war with Russia represents a remarkable change of course. Just a week ago, the US suspended military ...