51动漫

Margaret Keenan was vaccinated at University Hospital, Coventry, on 8 December, 2020

Health

2021 in review: Billions of covid vaccinations given unequally

On 8 December 2020, Margaret Keenan became the first person in the world to receive the Pfizer/BioNTech covid-19 vaccine outside of a clinical trial. 12 months and billions of shots later, several countries are already on a third round of coronavirus vaccinations

Australian Prime Minister Scott Morrison

Technology

Australia鈥檚 planned anti-trolling law may silence political critics

HEXDC6 Cosmic rays.Artwork of high-energy particles radiation from star in deep space (cosmic rays) impacting molecules atoms in Earth's atmosphere.These primary impacts cause secondary cascade of subatomic particles.Detection analysis of these particles,which include protons,neutrons,light nuclei,neutrinos,pions,and muons,can reveal source of cosmic rays.These sources may include gamma ray bursts (GRBs),active galactic nuclei,supernovae quasars.Such research is carried out atmospheric balloons,or advanced detectors built underground or underwater,to shield them from other radiation.

Technology

US Navy is developing GPS that uses cosmic rays to navigate the Arctic

Omicron may spread much more easily at social functions than other variants

Health

Omicron variant may make Christmas party infection risk much higher

feather in amber

Life

Dinosaur-era swamp ecosystem preserved in amber

A technician prepares a sample

Health

Investigation fails to replicate most cancer biology lab findings

Early expedition photographs reveal long-term environmental change

Watch biobots replicate themselves in a dish

A68X7W Ol Doinyo Lengai lava flowing from a cone, aerial view of the crater floor, Tanzania

Is Ol Doinyo Lengai the strangest volcano in the solar system?

CX6R9A Green soy plant leaves in the cultivate field, against the sun

Life

The way that leaves flutter can reveal when plants need more water

Leaves vibrate at a different frequency depending on whether soy plants are under water stress

Environment

Extreme lack of sea ice in Hudson Bay puts polar bears under pressure

Health

Omicron looks set to cause a huge wave of covid-19 around the world

Life

Migrating birds may be paler colours to help them keep cool

Health

Older people who get cataracts removed have lower dementia risk