mRNA, viral vector, cold-chain, T-cell. The COVID-19 vaccines introduced a string of new concepts that confused many and worried some. This article explains some of the key information about the most popular vaccines.
China has supplied more vaccines to the world than any other country. But until the World Health Organization confirmed their effectiveness and safety, many countries had been limited to jabs manufactured in Europe or the U.S..
Panta Petrovic, 70, first discovered there was a pandemic on a rare trip into a nearby village. He had lived in a cave in virtual isolation from the world for 20 years. Nevertheless he asked to be vaccinated as soon as possible.
Space launches are expensive and polluting and many satellites rapidly become obsolete, crowding orbit with space junk. The European Space Agency decided to address the problem with a device that can be reprogrammed from thousands of kilometers away.
One hundred days on from Brexit's full implementation, CGTN launched a special project to look at the impact. We spoke to people from both sides of the debate, including some who had changed their minds.
Back in March, as the vaccine roll-outs were gaining momentum in Europe, a debate raged over how close together the two doses should be given. The UK insisted on spreading them out, enabling an initial protection to be given to more people. Most EU countries put them closer together, meaning full vaccination could be achieved more quickly.
Researchers used measurements of more than 65 million people to see how the world's populations are growing. In line with previous studies, the Dutch came out as the world's tallest people, although young generations aren't matching the heights of their forebears.
World War II veteran Tom Moore captured the world's imagination as he raised millions of pounds for hospitals by walking laps of his garden during the coronavirus lockdown. His death at age 100 prompted national mourning.