Destroyed Challenger shuttle section found

A part of the space shuttle Challenger has been found buried in sand at the bottom of the Atlantic Ocean.

COP27 puts climate compensation on agenda

Delegates from more than 190 countries have kicked off the United Nations climate summit in Egypt with a deal to discuss compensating poor countries.

Wealthy nations must step up climate aid

US envoy John Kerry has called on the world’s wealthier nations to “step up” to help poorer countries cope with the impact of climate change.

War distracts from climate change: Ukraine

World leaders will only be able to focus on climate change when there is peace, says Ukraine’s President Volodymyr Zelenskiy.

Russia, China block Antarctic protections

Russia and China have again blocked plans backed by the European Union, the US and 23 other nations to protect oceans around Antarctica from fishing.

Closest known black hole to Earth spotted by astronomers

Astronomers have discovered the closest known black hole to Earth, just 1,600 light-years away.

UN chief warns planet is heading toward `climate chaos’

U.N. Secretary-General Antonio Guterres warned Thursday that the planet is heading toward irreversible “climate chaos” and urged global leaders at the upcoming climate summit in Egypt to put the world back on track to cut emissions, keep promises on climate financing and help developing countries speed their transition to renewable energy.