#CNNWorld

Senior European diplomats have urged the US not to kill off the Iran nuclear deal, as President Donald Trump mulls whether to reimpose sanctions on the country ahead of a Friday deadline.

A greener alternative to coffins, Capsula Mundi is an egg-shaped pod that feeds a tree planted above it as it breaks down.

A substantial amount of snow fell in Ain Sefra, a desert town in Algeria known as the "Gateway to the Sahara," for reportedly the third time in 40 years.

President Donald Trump's top national security advisers are encouraging him to comply with the terms of the 2015 Iran nuclear deal and renew temporary waivers for US sanctions against Iran ahead of Friday's key legal deadline, US officials told CNN.

The only known repeating fast radio burst just got more extreme. Researchers are learning more about the extreme environment for the source of this mysterious burst.

President Donald Trump expressed openness to holding talks between the United States and North Korea during a call with South Korean President Moon Jae-in on Wednesday, the latest of Trump's forays into inter-Korean relations.

The Trump administration says it will not seek to bring oil and gas drilling to waters off Florida's coast, conceding to vocal opposition from the Republican governor of the tourism-driven state.

The Trump administration has eliminated or replaced references to climate change, renewable energy and similar topics on websites across the federal government, according to a new study released Wednesday by a coalition of academic and nonprofit groups.

CODIS -- the FBI's Combined DNA Index System, containing genetic evidence gathered from crime scenes and serial offenders -- helps cops nab criminals. Now, a similar DNA database is helping link international traffickers of rhinoceros horns to the scene of a poaching, according to a study published Monday in the journal Current Biology.

North Korea has agreed to send a delegation to next month's Winter Olympics in South Korea and to hold talks with Seoul to ease military tensions, in the most significant thaw in relations between the neighboring states in years.

Never mind high-pressure peace talks that fail amid the looming threat of warfare. Try wrestling or ping-pong diplomacy instead.

In a joint statement, North and South Korea have agreed to hold military talks. CNN's Will Ripley reports.