Science

‘Ready to come out?’ Scientists reemerge after year ‘on Mars’

The NASA astronaut knocks loudly three times on a what appears to be a nondescript door, and calls cheerfully: “You ready to come out?”

The reply is inaudible, but beneath his mask he appears to be grinning as he yanks the door open — and four scientists who have spent a year away from all other human contact, simulating a mission to Mars, spill out to cheers and applause.

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Menopause treatments can help with hot flashes and other symptoms

Menopause used to be a taboo topic in many quarters. Now, it’s frequently in the news.

In March 2024, the White House announced an initiative to “Galvanize New Research on Women’s Midlife Health.” In May, Sen. Patty Murray introduced bipartisan legislation that would spend US$275 million to improve menopause care and midlife health.

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‘Jaws’ portrayed sharks as monsters, but it also inspired a generation of shark scientists

Human fear of sharks has deep roots. Written works and art from the ancient world contain references to sharks preying on sailors as early as the eighth century B.C.E.

Relayed back to land, stories about shark encounters have been embellished and amplified. Together with the fact that from time to time – very rarely – sharks bite humans, people have been primed for centuries to imagine terrifying situations at sea.

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Is AI a major drain on the world's energy supply?

When Google announced this week that its climate emissions had risen by 48 percent since 2019, it pointed the finger at artificial intelligence.

US tech firms are building vast networks of data centres across the globe and say AI is fuelling the growth, throwing the spotlight on the amount of energy the technology is sucking up and its impact on the environment.

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Even short trips to space can change an astronaut’s biology

Only about 600 people have ever traveled to space. The vast majority of astronauts over the past six decades have been middle-aged men on short-duration missions of fewer than 20 days.

Today, with private, commercial and multinational spaceflight providers and flyers entering the market, we are witnessing a new era of human spaceflight. Missions have ranged from minutes, hours and days to months.

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Why is Amazon building a $2 billion cloud for Australia’s military intelligence

Amazon has secured a A$2 billion contract with the Australian Signals Directorate – the agency responsible for foreign signals intelligence and information security. A local subsidiary of Amazon Web Services will build a Top Secret Cloud to provide secure data storage for military intelligence.

The deal will securely manage top secret data vital to Australia’s national security. This contract is expected to last over a decade. It will build three secure data centres at undisclosed locations in Australia.

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Beryl foreshadows future hurricanes, says UN weather agency

The World Meteorological Organization, which is tracking Hurricane Beryl's deadly course through the Caribbean, told AFP that more storms with its hallmarks could be expected in the future.

The WMO, the United Nations' weather and climate agency, said the record-breaking tropical cyclone intensified rapidly, picking up energy over a warmer Atlantic Ocean and developing into a system with lots of heavy rain.

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'They're everywhere': Common foods linked to elevated levels of PFAS in body

Common foods including white rice and eggs are linked to higher levels of "forever chemicals" in the body, new research from scientists at the Geisel School of Medicine at Dartmouth shows.

The researchers also found elevated levels of per- and polyfluoroalkyl substances (PFAS) in people who consumed coffee, red meat, and seafood, based on plasma and breast milk samples of 3,000 pregnant people. The findings, published in Science of the Total Environment, add to the mounting evidence of the accumulation of PFAS, which were developed by chemical companies in the mid-20th century, in the natural environment and the body.

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Satellite images show deforestation toll of Indonesia mines

More than 700,000 hectares of forest in Indonesia have been cleared for mining since 2001, including large tracts of primary forest, a new analysis using satellite data has found.

The TreeMap, a conservation start-up, used high-resolution imagery from several satellites and two decades of data from the long-running Landsat program to map mines and related infrastructure and track deforestation.

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Thousands told to flee raging California wildfire

Thousands of people have been ordered to evacuate as a wildfire rages out of control in northern California, with the region gripped by an "exceptionally dangerous" heatwave that is making conditions worse.

More than 3,000 acres (1,200 hectares) of grass and woodland have been consumed since Tuesday when a blaze started just outside Oroville, with authorities telling 13,000 people to leave the area.

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How to survive a heat wave on a fixed income

This story was originally published by Grist. Sign up for Grist's weekly newsletter here.

Mone Choy is 68 and lives in the New York City neighborhood of Inwood, at the northern tip of Manhattan, on a fixed disability income of $1,901 per month. Her rent is frozen at $1,928. She lives with chronic health issues that render her unable to work. In addition to a few other intermittent gigs, Choy covers the rest of her expenses by collecting bottles from her building’s recycling and taking them to a nearby redemption center.

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Tourists seek out Nordic holidays to keep cool

Far from her home in the tourist mecca of Tenerife, Cati Padilla is one of the growing number of travellers escaping heatwaves for cooler holidays in Nordic countries.

Countries like Norway and Sweden in northern Europe are now promoting "coolcations" to attract visitors to their temperate climates.

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Ancient Greek sanctuary slowly sinks into the Aegean Sea

A brief boat ride from the thrumming nightclubs of Mykonos lies the UNESCO heritage site of Delos, one of the most important sanctuaries of the ancient Greek and Roman world.

Surrounded by piercing azure waters, Delos' 2,000-year-old buildings offer a microcosm of information on daily life during the Hellenistic and Roman periods.

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