Science

It will be NASA’s second Mars lander lost to dust: A global dust storm took out Opportunity in 2018.

Greenhouse gas concentrations, sea level rise, ocean temperatures and ocean acidification all hit their highest recorded levels, a U.N. report found.

The tooth is one of the few physical remains known of Denisovans, a sister lineage to Neanderthals who until now had been known only from scrappy dental and bone fossils from a single site in Siberia and one in the Himalayas.

Pollution is causing many people to die earlier than they would have otherwise, both globally and in the U.S., according to two new studies.

The reddish hue occurs when the sun, Earth and moon align, and the moon passes through the darkest part of Earth’s shadow.

Researchers had no idea if anything would sprout in the harsh moon dirt and wanted to see if it could be used to grow food by the next generation of lunar explorers.

The low-frequency sonar of warships and submarines directly interferes with dolphins’ echolocation, leaving them unable to navigate, scientists say.

Scientists call it the “gentle giant” of the Milky Way: a massive black hole called Sagittarius A*. It’s about 4 million times larger than the sun in our solar system. NBC News’ Tom Costello explains the history behind the monumental discovery and the facts about this phenomenon.

The photo, which shows an oval-shaped void surrounded by a bright ring of glowing gas, is only the second image captured of a black hole.

The inaugural Aspen Ideas: Climate conference, a four-day event that began Monday, attracted hundreds of scientists, policymakers, activists and business leaders.

"It will degrade our entire forest," a scientist and environmentalist said about the train project through jungle, cave systems and Mayan archaeological sites.