levels

BEIJING (Reuters) - Levels of an antibody found in recovered COVID-19 patients fell sharply in 2-3 months after infection for both symptomatic and asymptomatic patients, according to a Chinese study, raising questions about the length of any immunity against the novel coronavirus. FILE PHOTO: A computer image created by Nexu Science Communication together with Trinity…

By Michael Marshall Dinosaurs evolved in the Triassic periodMAURICIO ANTON / SCIENCE PHOTO LIBRARY Vast floods caused by sea level rise may have helped dinosaurs take over the planet. The first dinosaurs evolved early in the Triassic period, about 245 million years ago, but these were rare. It took about another 20 million years before…

By Adam Vaughan Roads such as these in Istanbul, Turkey have been emptied by the coronavirus pandemicMuhammed Enes Yildirim/Anadolu Agency via Getty Images Lockdowns and economic slowdowns during the coronavirus pandemic have had no visible impact on the amount of carbon dioxide in Earth’s atmosphere, according to new data which shows levels of the greenhouse…

Increasing carbon dioxide levels in the atmosphere may be boosting vegetation for now, but climate change is set to more than wipe out any gains, says James Wong Earth | Comment 13 May 2020 By James Wong Igor Stevanovic/Alamy IN A world of increasing uncertainty, good news has a particular allure. So it is unsurprising…

Get all the latest news on coronavirus and more delivered daily to your inbox. Sign up here.Men's blood has higher levels of a vital enzyme used by the novel coronavirus to infect cells, according to a new European study, which could help explain why men are more vulnerable to COVID-19 infection.Angiotensin-converting enzyme 2 (ACE2) is located…