As different people respond differently to vaccines, thousands of people, across continents need to be involved in trials to ensure the effectiveness of a COVID-19 vaccine
With more than 3,000 new Coronavirus cases in two consecutive days, the U.K. will be under restrictions, dubbed as the rule of six to stop the spread of virus
The British naturalist pointed out that global warming is the only one of a number of crises, and the world would witness massive destruction, far greater than Chernobyl