New Scientist Magazine – August 12, 2023 issue: The Four Ways to Age; Can Quantum Simulations ever be real?; Heaviest animal ever; Spotting Saturn’s Rings; Concrete batteries; Finding Homo Naledi and more…

How working out your ageotype could help you live healthier for longer

Your body is ageing down one of four – or more – possible pathways. Figuring out your “ageotype” could help you zero in on the things you can do to stay healthier for longer

By Graham Lawton

THERE is a (probably apocryphal) story about Henry Ford sending agents out to junkyards across the US in search of scrapped Model Ts. The famous industrialist wanted to know which of the car’s vital components failed first, so he could do something about it. The agents reported back that every bit of the car was susceptible to failure, but some were more susceptible than others, except for one – a component of the steering system called the kingpin, which almost never failed. They expected Ford to announce plans to extend the working lives of the weaker components. Instead, he ordered his engineers to make less resilient kingpins. No point wasting good money on a component that always outlived the others.

Cave of Bones review: Lee Berger on the discovery of Homo naledi

Sewage crisis: The truth about British rivers and how to clean them up

From time crystals to wormholes: When is a quantum simulation real?

Energy-storing concrete could form foundations for solar-powered homes

Scientists race to test claimed room-temperature superconductor

Science Magazine – June 9, 2023 issue: In response Covid-19 lockdowns that severely altered human mobility, with many people confined to their homes, animals such as the coyote (Canis latrans) traveled longer distances and occurred closer to roads. These changes suggest that animals can modify their behavior in response to rapid changes in human mobility.

Was a small-brained human relative the world’s first gravedigger—and artist?

Anthropologists praise Homo naledi fossils but doubt spectacular claims of intentional burial and art

A trio of papers posted online and presented at a meeting today lays out an astonishing scenario. Roughly 240,000 years ago, they suggest, small-brained human relatives carried their dead through a labyrinth of tight passageways into the dark depths of a vast limestone cave system in South Africa. Working by firelight, these diminutive cave explorers dug shallow graves, sometimes arranging bodies in fetal positions and placing a stone tool near a child’s hand. Some etched cave walls with crosshatches and others cooked small animals in what amounted to a subterranean funeral, more than 100,000 years before such behaviors emerged in modern humans.

LET THERE BE DARK

Small lettuce sprouts growing on acetate

Crops grown without sunlight could help feed astronauts bound for Mars, and someday supplement dinner plates on Earth

For the first astronauts to visit Mars, what to eat on their 3-year mission will be one of the most critical questions. It’s not just a matter of taste. According to one recent estimate, a crew of six would require an estimated 10,000 kilograms of food for the trip. NASA—which plans to send people to Mars within 2 decades—could stuff a spacecraft with prepackaged meals and launch additional supplies to the Red Planet in advance for the voyage home. But even that wouldn’t completely solve the problem.