Pebanista yacuruna is the largest freshwater dolphin ever found, but it is more closely related to today's river dolphins of South Asia than those in the Amazon
Conditions north of the Arctic Circle, where dinosaurs roamed in abundance during the mid-Cretaceous, were warmer than today, with rainfall comparable to “modern-day Miami”
The document was "likely the very first publicly available report on the creation of the bomb," according to RR Auction
Scientists have unearthed more than 4,400 human brains—some more than 12,000 years old—making them less rare than thought, a new study finds
A new database catalogs 16,000 chemicals found in plastics and identifies more than 4,200 that are potentially hazardous to human health and the environment
The new discovery could help scientists unravel the mystery of how the arachnids evolved across some 537 million years
Surveys of 24 astronauts who traveled to the International Space Station found that nearly all of them reported headaches, and many of these occurred past the first week in space
Officials detected signs of an eruption only 40 minutes before fountains of lava burst from the ground
The snakes may be some of the most resource-efficient animals to farm on the planet, a new study suggests
The NASA-supported experiments are mobilizing legions of researchers and volunteers to capture wide-ranging observations during totality, from amateur radio operations to elusive solar plumes to unusual animal behavior
Long presumed lost, the collection of rare shells is now on display in England
As it returned to Earth, the spacecraft likely broke apart or burned up, and the booster was lost in the Gulf of Mexico
The gravitational interactions between Mars and Earth as they orbit the sun may have periodically promoted a warmer climate and changes in ocean circulation on our home planet
Alongside humans, five species of toothed whales are known to experience menopause. A new study suggests they evolved the trait to increase their lifespan
New research upends a long-held theory that male mammals tend to be bigger than their female counterparts
The astrolabe features Hebrew and Latin inscriptions added by different owners over time
Comet 12P/Pons-Brooks is a frigid, volcanic ice ball that won’t pass near Earth again until 2095
A metal plate affixed to the Europa Clipper is engraved with a poem, tributes to scientists and waveforms representing the word "water" in 103 languages, among other drawings
Paralyzed by polio in 1952, Paul Alexander led a full life despite being confined to a large steel ventilator
Genomes of Indian people today reveal links to a prehistoric migration and a group of Iranian farmers, as well as several new sequences from the Neanderthal genome
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