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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…

Precise control of light focus is essential for applications ranging from microscopy and laser surgery to quantum optics and telecommunications. However, existing solutions often rely on large, complex external components that limit integration and speed. In a new study published in Light: Science & Applications, researchers led by Professor Markus A. Schmidt from the Leibniz…

An internationally joint research group between Singapore and Japan has unveiled a blueprint for arranging exotic, knot-like patterns of light into repeatable crystals that extend across both space and time. The work lays out how to build and control “hopfion” lattices using structured beams at two different colors, pointing to future systems for dense, robust…

Maddie Molloy BBC Climate & Science Bidyut Kalita This image titled “Special Delivery” was highly commended in the Behaviour: Invertebrates category. At first glance, the potter wasp appears to be riding a broomstick. But this industrious insect isn’t flying back to stir its witch’s cauldron, or playing Quidditch. It’s carrying a caterpillar – prey to…

SpaceX has pulled off a successful test flight of its newest generation rocket Starship, reversing a trend of disappointing failures. The world’s largest and most powerful rocket blasted off from Texas just after 18:30 local time (23:30 BST) for a nail-biting 60-minute flight. Parts of the engine appeared to explode at one stage, and flaps…