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Fossils show two types of ancient human ancestors lived at the same place and time. One was possibly an unknown species

By Ashley Strickland, CNN (CNN) — Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same place between 2.6 million and 2.8 million years ago — and one of them may be a previously unknown species. The discovery provides

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An artwork by Canadian artist

Global plastic treaty talks end in failure as countries remain bitterly divided over how to tackle the crisis

By Laura Paddison, CNN (CNN) — Talks to finalize the world’s first treaty on plastic pollution in Geneva, Switzerland collapsed in failure Friday as countries remained bitterly divided how to tackle the crisis. The summit, held at the United Nations headquarters and attended by delegates from more than 180 countries, was supposed to end Thursday

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A worker points to a monitor displaying current satellites in orbit and real-time communications across the globe at the Iridium Communications Inc. Satellite Network Operations Center in Leesburg

Climate pollution is making GPS and communications satellites even more vulnerable to solar storms

By Andrew Freedman, CNN (CNN) — Satellites, including those used for GPS and communications, will face greater risks in coming decades during solar-triggered geomagnetic storms because of the effect climate pollution has on Earth’s atmosphere, a new study found. The increasing volume of planet-warming carbon dioxide in the upper atmosphere is likely to make the

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Scientists exploring the hadal zone between Russia and Alaska say they discovered the deepest known ecosystem

Scientists say they cruised the ocean in a deep-sea submersible and came across an undiscovered ecosystem

By Marlowe Starling, CNN (CNN) — Marine researchers exploring extreme depths say they have discovered an astonishing deep-sea ecosystem of chemosynthetic life that’s fueled by gases escaping from fractures in the ocean bed. The expedition revealed methane-producing microbes and marine invertebrates that make their home in unforgiving conditions where the sun’s rays don’t reach, according

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Astronaut James A. Lovell

Apollo 13 astronaut Jim Lovell dead at 97

CNN By Jackie Wattles, Ashley Strickland, CNN (CNN) — Famed NASA astronaut Jim Lovell, who commanded the harrowing Apollo 13 mission that was forced to abandon a lunar landing attempt in 1970, has died. He was 97. Lovell died on August 7 in Lake Forest, Illinois, according to a NASA news release. The cause of

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