The stock market debut of Coinbase, a start-up that allows people to buy and sell cryptocurrencies like Bitcoin, is a watershed moment for digital money. It also threatens to lock in a technology with an astonishing environmental footprint. Cryptocurrencies use blockchain technology,
All year long as Earth revolves around the sun, it passes through streams of cosmic debris. The resulting meteor showers can light up night skies from dusk to dawn, and if you’re lucky you might be able to catch one. If you
“Most of the shark researchers are thinking, not the wrong way, but in an incomplete way,” he said. One of Dr. Clua’s co-authors, John Linnell of the Norwegian Institute for Nature Research, studies human conflicts with predators on land, and acknowledges that
The days have turned gray, the future feels black. We’re all seeing red, we’re all feeling blue. Perhaps it’s the isolated colors that are bringing us down; perhaps what we need is a whole spectrum. All the shades of the planet are
Nobody believes it was ET phoning, but radio astronomers admit they don’t have an explanation yet for a beam of radio waves that apparently came from the direction of the star Proxima Centauri. “It’s some sort of technological signal. The question is
The distribution of vaccines in the United States has gotten off to a slower-than-expected start, federal health officials acknowledged in a news conference on Wednesday, though they also voiced confidence that the pace would accelerate in the coming weeks. As of Wednesday,
In early 2020, the Beijing Institute of Biological Products created an inactivated coronavirus vaccine called BBIBP-CorV. It was later put into clinical trials by the state-owned Chinese company Sinopharm. On Dec. 30, Sinopharm announced that the vaccine had an efficacy of 79.34
The first bird appeared last September 2019. A brown pelican arrived at International Bird Rescue in the San Pedro section of Los Angeles with severe injuries: straight slashes on both sides of its pouch that continued to the back of its head,
Zipping through water like shimmering arrowheads, cuttlefish are swift, sure hunters — death on eight limbs and two waving tentacles for small creatures in their vicinity. They morph to match the landscape, shifting between a variety of hues and even textures, using
Rejecting the advice of its scientific advisers, the federal government has released new dietary recommendations that sound a familiar nutritional refrain, advising Americans to “make every bite count” while dismissing expert recommendations to sharply reduce consumption of sugar and alcoholic beverages. The
Experts fear that vaccination rates may have fallen further during the pandemic, as they have among children, if older people wary of going to doctors’ offices or pharmacies skipped shots. Financial and bureaucratic obstacles also thwart vaccination efforts. Medicare Part B covers
