"Surprised by the regularity of the effect of climate change" on early human species, the scientists called it a "thunderous warning message."

One possible explanation is particles emitted by infected people in dry air, remain drier and therefore lighter — making it easier for them to linger for longer.

"The stronger the patriarchal norms of gender division in households in a region are, the less likely it will be that men share in household chores — even when they have the time."

The way we perceive temperature is complicated, influenced by circulation, metabolism, body size, sex, and mental health.

On average, women in Spain earn 22% less than their male peers.

“Never in the history of public health has herd immunity been used as a strategy for responding to an outbreak, let alone a pandemic,” he said.

The sharp increase in floods, storms, heatwaves, and droughts has cost the global economy $3 trillion.

The biggest threat to aquatic mammals is fishing, which accidentally kills an estimated 300,000 whales, dolphins, and porpoises every year.

One person's overconfidence can easily rub off on friends and colleagues until a social group is full of unfounded beliefs.

N2O has a heating effect 300 times that of carbon dioxide — and Brazil, China and India are showing the highest growth in N2O emissions.

It has less to do with our innermost desires and more to do with mental health and overstimulation.

Scientists say it's probably retro space junk.

A study suggests climate change is prompting an irreversible shift in the Amazon's ecosystem.

In India, 8.7 million people are living with chronic Hepatitis C.

Online harassment is leading women to quit social media altogether -- widening the existing gender gap on the internet in India.

For people with social anxiety, hugging can make it worse.

Scratching triggers mild pain in our skin — leading nerve cells to tell our brain that something is hurting, thus distracting it from the itch.

The survey suggests that for every one infection officially reported, there are actually 26 to 32 infected people who are undetected.