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Study: 2.5 billion T. rex roamed Earth, but not all at once

Apr 15, 2021
One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study finds.

Coinbase soars in market debut, valued near $86 billion

Apr 15, 2021
Coinbase made a rousing debut on Wall Street Wednesday, with shares of the digital currency exchange rising as high as $429, briefly giving it a market value over $100 billion.

Irish watchdog opens another Facebook probe, over data dump

Apr 15, 2021
Ireland's privacy regulator said Wednesday it has opened an investigation into Facebook after data on more than 500 million users was reportedly found dumped online, in a suspected violation of strict European Union privacy rules.

J&J vaccine to remain in limbo while officials seek evidence

Apr 15, 2021
Johnson & Johnson's COVID-19 vaccine will remain in limbo for a while longer after government health advisers declared Wednesday that they need more evidence to decide if a handful of unusual blood clots were linked to the shot — and if so, how big the risk really is.

EXPLAINER: What's known about J&J's vaccine and rare clots

Apr 14, 2021
A rare, rogue immune response is the main suspect as authorities investigate highly unusual blood clots following use of two similar COVID-19 vaccines from Johnson & Johnson and AstraZeneca. These are not typical blood clots. They’re weird in two ways.

Tweaked COVID vaccines in testing aim to fend off variants

Apr 13, 2021
Dozens of Americans are rolling up their sleeves for a third dose of COVID-19 vaccine — this time, shots tweaked to guard against a worrisome mutated version of the virus.

Soviet cosmonaut made pioneering spaceflight 60 years ago

Apr 13, 2021
Yuri Gagarin's pioneering, single-orbit flight made him a hero in the Soviet Union and an international celebrity. After putting the world's first satellite into orbit with the successful launch of Sputnik in October 1957, the Soviet space program, rushed to secure its dominance over the United States by putting a man into space.

Unusual treatment shows promise for kids with brain tumors

Apr 13, 2021
For decades, a deadly type of childhood cancer has eluded science’s best tools. Now doctors have made progress with an unusual treatment: Dripping millions of copies of a virus directly into kids’ brains to infect their tumors and spur an immune system attack.

Top Chinese official admits vaccines have low effectiveness

Apr 13, 2021
China’s top disease control official, in a rare acknowledgement, said current vaccines offer low protection against the coronavirus and mixing them is among strategies being considered to boost their effectiveness.

US recommends 'pause' for J&J vaccine over clot reports

Apr 13, 2021
The U.S. is recommending a “pause” in administration of the single-dose Johnson & Johnson COVID-19 vaccine to investigate reports of potentially dangerous blood clots.