CNN – World

By John Keefe and Rachel Ramirez, CNN Nearly 200 countries have pledged to cut greenhouse gas emissions to prevent the worst consequences of the climate crisis, but there is still a huge gap between what’s been promised and what scientists say is needed, according to a report by the UN Environment Programme. With just five

By Amy Woodyatt, CNN Scientists may have detected signs of a planet transiting a star outside of the Milky Way, in what could be the first planet ever to be discovered outside our galaxy. The possible exoplanet was discovered in the Whirlpool Galaxy — the spiral galaxy Messier 51 (M51) — by NASA’s Chandra X-ray

By Matt Rivers, CNN An eerie silence lingers over Hospital Universitaire de la Paix in the Delmas neighborhood of Port-au-Prince. Footsteps echo through empty hallways. The normal beeps and whirs of hospital equipment are absent. The organized chaos of a city emergency room is replaced by empty chairs strung with caution tape. The stillness is

By Rob Picheta, CNN The concentration of greenhouse gases in the atmosphere has once again reached record highs, according to a UN report published Monday, putting the planet on course for warming that far exceeds critical limits to stave off catastrophic climate change. The concentration of carbon dioxide (CO2) in 2020 was 149% higher than

By Katie Hunt, CNN Mammoths and other giant creatures of the Ice Age such as woolly rhinos survived longer than scientists thought, coexisting with humans for tens of thousands of years before they vanished for good. That’s according to the results of an ambitious 10-year research project that analyzed DNA from hundreds of soil samples

By Kareem El Damanhoury, Isil Sariyuce and Alaa Elassar, CNN Turkey’s President Recep Tayyip Erdogan has ordered the ambassadors of 10 countries, including the U.S., France, and Germany, be declared “persona non grata” after calling for the release of jailed Turkish businessman and philanthropist Osman Kavala. Persona non grata literally means “an unwelcome person.” “I

By Ashley Strickland, CNN The domestication of horses changed the course of human history, but scientists have tried for years to figure out when and where this crucial event happened. Now, evidence from a new study using DNA analysis suggests horses were first domesticated 4,200 years ago in the steppes of the Black Sea region,

By Noah Sheidlower, Melissa Velasquez and Justin Lear, CNN To the surprise of researchers and sunfish enthusiasts worldwide, a more than 4,000-pound sunfish was found tangled in the nets of a tuna-fishing boat off the coast of Ceuta, an autonomous Spanish port city in north Africa bordering Morocco, on October 4. The mammoth sunfish measured

By Sara Spary, CNN Hopes that mankind can save the northern white rhino from extinction appeared more remote than ever this week, after scientists announced they will retire one of the last two living northern white rhinos from a breeding program. Najin, a 32-year-old northern white rhino — who, along with her daughter Fatu is