Humans

50 years ago, scientists claimed marijuana threatened teens’ mental health

The White House Conference on Youth voted to legalize the sale of...

Experts predict U.S. COVID-19 cases will dip in summer but surge in winter

The coming months of the COVID-19 pandemic in the United States...

4 takeaways from the WHO’s report on the origins of the coronavirus

A new World Health Organization report investigating the origins of the coronavirus...

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Why do sea turtles, penguins and sharks sometimes just swim in circles or spirals?

Marine science has its own crop circle mysteries. Sea turtles, sharks, penguins and even whales sometimes just go circular, swimming around and...

Evolving an arch across the foot’s width helped hominids walk upright

The arch running across the width of the human foot might be a big part of the reason that people can walk...

Fossil fuel use may emit 40 percent more methane than we thought

Using fossil fuels releases much more of the potent greenhouse gas methane than previously thought — possibly 25 to 40 percent more,...

No, you can’t hear the difference between sick and healthy coughs

An aisle over in the grocery store, someone lets out a nasty cough, and you shudder. “That person sounds really sick,” you...

Dolphins can learn from peers how to use shells as tools

For some bottlenose dolphins, finding a meal may be about who you know. Dolphins often learn how to hunt...

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Heavy metal may rain from the skies of planet WASP 76b

On one distant world, “heavy metal” could be a weather forecast. Telescope observations indicate that an exoplanet nearly 400 light-years away has...

Why African-Americans may be especially vulnerable to COVID-19

COVID-19 was called the great equalizer. Nobody was immune; anybody could succumb. But the virus’ spread across the United States is exposing...

DNA from a 5,200-year-old Irish tomb hints at ancient royal incest

A man buried in a huge, roughly 5200-year-old Irish stone tomb was the product of incest, a new study finds.

Presenting at an academic conference

You must also be well-prepared in terms of public speaking factors such as observing time limits, having a strict structure, making eye...

The new COVID-19 drug remdesivir is here. Now what?

Though remdesivir, a new treatment for COVID-19, has been hailed as a game changer, most people sick with the coronavirus will have...