Some 390 million years ago in the ancient ocean, marine animals began colonizing depths previously uninhabited. New research indicates this underwater migration occurred in response to a permanent increase in deep-ocean oxygen, driven by the aboveground spread of woody plants — precursors to Earth’s first forests. That rise in oxygen coincided with a period of…
A deep sea worm that inhabits hydrothermal vents survives the high levels of toxic arsenic and sulfide in its environment by combining them in its cells to form a less hazardous mineral. Chaolun Li of the Institute of Oceanology, CAS, China, and colleagues report these findings in a new study published August 26th in the…
Matt Dempsey Artwork: the dinosaur had long spikes sticking out from the side of its head Scientists have discovered a bizarre armoured dinosaur which had metre-long spikes sticking out from its neck. The species, called Spicomellus afer, lived 165 million years ago, and is the oldest example of a group of armoured dinosaurs called ankylosaurs….
Philippa Roxby Health Reporter Getty Images Some patients taking the weight-loss drug Mounjaro have told BBC News they are struggling to obtain the medicine, and are worried about the impact on their health. There is rising demand for the drug, after the US manufacturer Eli Lilly announced a major price increase from 1 September. The…
Today, federal agencies and their technology partners are operating in the most scrutinized risk environment in history. The stakes are clear: a breach in high-impact systems – those holding national security, healthcare, or financial data – can result in loss of life, catastrophic economic damage, or disruption of essential services. Against this backdrop, the federal…
I was struck by her pessimism, which she told me was shared by friends from California to Georgia to New Hampshire. In an already fragile world, one increasingly beset by climate change and the breakdown of the international order, AI looms in the background, threatening young people’s ability to secure a prosperous future. It’s an…
Move over gym rats. Bumble bees are now the true masters of macros. In the first long-term, community-level field study of wild bumble bee nutrition, a team of ecologists led by Northwestern University and the Chicago Botanic Garden discovered that wild bees aren’t just flitting from flower to flower, collecting pollen at random. Instead, they…
Sharks can famously replace their teeth, with new ones always growing as they’re using up the current set. As sharks rely on their teeth to catch prey, this is vital to the survival of one of the oceans’ top predators. But the ability to regrow teeth might not be enough to ensure they can withstand…
Researchers test a chest compression machine on a dummy in an aeroplane CNES Microgravity makes it tricky to do simple tasks like eating, using the toilet and showering, so it is no wonder that performing CPR on someone whose heart stops beating in space is an extremely demanding procedure. But a mechanical device could do…
Proton exchange membrane fuel cells (PEMFCs), often referred to as “hydrogen power banks,” are clean energy devices that generate electricity from hydrogen and oxygen with only water as a byproduct. Characterized by high efficiency, rapid start-up, and zero emissions, they hold great promise in transportation, portable electronics, and stationary power generation. Unfortunately, PEMFCs currently rely…
