Herd immunity: why the figure is always a bit vague

hobbit/Shutterstock Nearly 100 years ago, two British researchers, William Topley and Graham Wilson, were experimenting with bacterial infections in mice. They noticed that individual survival depended on how many of the mice were vaccinated. So the role of the immunity of an individual needed to be distinguished from the immunityContinue Reading

New dinosaur discovery in Switzerland fills a gap in evolutionary history of sauropods

_Schleitheimia_ (left) and _Plateosaurus_ (above right). University of Utrecht, Author provided Dinosaurs were the dominant group of animals on Earth for over 150 million years. Long-necked, plant-eating sauropods such as Brontosaurus, Diplodocus and Brachiosaurus are probably among the most famous dinosaurs, in part thanks to their huge size and strangeContinue Reading

Coronavirus: why are some people experiencing long-term fatigue?

algae/Shutterstock People who have been seriously unwell and treated on intensive care units can expect to take some months to recover fully, regardless of their ailment. However, with COVID-19, evidence is mounting that some people who have had relatively mild symptoms at home may also have a prolonged illness. OverwhelmingContinue Reading