Passport, ticket… Covid-19 negative test result: How to navigate the new rules for travel in the coronavirus era Check to see if you need proof that you’re free of Covid-19 before travelling Free NHS tests are for those with Covid symptoms, not people going on holiday Some countries allow you to avoid pre-flight tests by … Read more
New study reveals how Chinook salmon use the Earth’s magnetic field as a kind of GPS signal to help navigate in the ocean Researchers confirmed the existence of magnetite crystals in Chinook salmon The crystals allow the salmon to sense magnetic pulses from the Earth They use these pulses as a biological GPS signal to … Read more
Military robots win search and rescue competition as they search for survivors in underground power plant after gas leak DARPA hosted a search and rescue competition for autonomous robots The winning team, from JPL programmed 12 autonomous robots to find warm mannequins standing in for human survivors, and a lost cell phone in the ruins … Read more