Many animal species eat their own waste but the reasons behind it are not well understood.

Chinese researchers say unknown particles released by the pathogen could be causing some people to test positive.

US researchers compared data across the globe, finding places where people were inoculated against TB had lower mortality rates.

Influenza immunity findings add weight to the argument that children should be vaccinated but the success of flu shots depends on several factors.

Factories were closed and cars stayed off the road but particularly fine particles persisted in the air.

Researchers tested stability of pathogen on various surfaces, including paper currency and pig skin.

Report from Institute of Automation says the technology can spot dangers on sites and determine what workers are doing.

Brazilian researchers say they found evidence of the pathogen in waste water collected from a seaside city in November, 91 days before the first case was detected in the country.

Genes from three virus strains part of a group reported ‘almost exclusively’ in Asia’s tropical zone, according to Harvard team. But Chinese researcher says ‘they could have come from anywhere’.

Researchers from the Chinese CDC say the approach has had positive results in animal tests, ramping up the production of antibodies.

Chinese non-peer reviewed paper suggests virus has a narrow bottleneck, meaning the number of particles passed on from a host to others.

Chinese scientists discovered the body of water beneath Fiery Cross Reef and it’s thought to be expanding at a fast rate of 1 metre a year.

Scientists used a computer model to show how Covid-19 death rates were higher in countries where people tended not to cover their mouths.

Team in southwest China finds median duration was 19 days, a third longer than for people with mild symptoms.

Antibodies found in blood of people who have fought disease failed to stop D614G, Chinese scientists say.

Since January, the virus has gone through at least six major gene changes that boosted its ability to infect and evade the human immune system.

Researchers behind the non-peer-reviewed paper ran antibody tests on samples from hospital workers who were exposed to patients at early stage of outbreak – only 4 per cent had them, but at least 25 per cent could have been infected.

Researchers say they discovered two huge magma chambers under Wei Mountain, which last erupted more than 500,000 years ago.

Outbreaks of Covid-19 appear to have been less severe in southern parts of the world where the intensity of ultraviolet light is higher, study says.

Feline medication binds to enzyme, halting replication of the Covid-19 pathogen, according to scientists.

Team developed high-performance construction material from artificial lunar dust that could potentially be made using volcanic rock on site.

Dogs’ diagnoses even lead to two ‘healthy’ subjects being retested and found positive for the pathogen.

Scientists from China, Europe and South Korea studied remains of populations who lived for about 6,000 years from 5525BC.

Analysis of patient samples from Wuhan shows virus caused ‘ballooning changes’ and damage to cells that produce sperm.

Spanish research claimed to be first comprehensive study of the effects on those with HIV compared with the general population in the same region.

A 10-minute scramjet boost to a weapon could give it a range of over 4,000km at top speed.

Computer model shows how potentially hazardous asteroids can be knocked off course and out of harm’s way using an ‘enhanced kinetic impactor’ spacecraft.

Both viruses remove marker molecules on surface of an infected cell that are used to identify invaders, according to Chinese researchers.

Researchers looked at data from Washington state, finding half of those who had contracted the virus by early May were aged under 40.

Spending by local governments expected to buoy investment in the area despite the tough times.