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We've known for a while that ancient humans got busy with Neanderthals, but how exactly did that Neanderthal DNA affect modern humans?

For most jobs, it's understood that you can be fired - whether for crime, incompetence, or just poor performance. But what if your job happens to be the most powerful position in the country - or the world? That's where impeachment comes in. But how does it work? Alex Gendler details the process of impeachment.

We had a panel of kids prepare and taste test 100 years of sandwiches from 1900 to today. Here's what they thought about PBJs, po' boys, paninis, and everything in between.

Pre-order my first cookbook, Eat What You Watch: A Cleverly-Titled Romp Through the Fanciful Fetes of Fiction! Really it's just called Eat What You Watch, but I totally should have called it that instead.

A 31-year-old woman has turned her back on expensive rents and property prices - by living full time in a van. With an interior measuring just 13ft 2in long, 5ft 8in wide and 6ft 2in high, Eileah Ohning's home is her Freightliner Sprinter High Top van. The photographic producer from Columbus, Ohio, has lived in her compact four-wheel home since May 2017. Complete with a memory foam mattress, storage compartments, a desk and a camping stove, she even has plans to add in a shower, toilet and fridge. Eileah parks her van close enough to her workplace that she never needs to worry about the morning commute and showers at her local gym.

Bullied at school for her skin tone, 11-year-old Kheris Rogers is demonstrating why beauty isn't just skin deep -- through fashion. She designed her own clothing line, Flexin' in My Complexion, to empower others to love their differences, and with support from her family and friends, is making steps down the runway towards change.

Trains require a lot of people to operate.

Mosquitoes kill more people annually than any other animal on earth. But several research companies are looking to tame this issue.

Dhaka, Bangladesh - the capital of the most densely populated major country in the world - is also the planet's fastest growing city.

Psyche was born so beautiful that she was worshipped as a new incarnation of Venus, the goddess of love. But human lovers were too intimidated to approach her, and Apollo recommended her father abandon her on a crag where she would marry "a cruel and savage, serpent-like winged evil." But Psyche's story ended up being much more interesting. Brendan Pelsue shares the myth of Cupid and Psyche.

Water is refreshing, hydrating, and invaluable to your survival. But clean water remains a precious and often scarce commodity - there are nearly 800 million people who still don't have regular access to it. Why is that? And how can you tell whether the water you have access to - whether from a tap or otherwise - is drinkable? Mia Nacamulli examines water contamination and treatment.

Most people make their voices higher pitched when talking to their pets. But does this Pet-Directed Speech have any influence on animals?

"It can be so hard to forgive because - so often - we simply are in the right and the scale of the folly, thoughtlessness and meanness of others seems utterly beyond our own measure. But there are two inviolable ideas which should nevertheless, in the face of the grossest behaviour, be kept in mind to increase our chances of cutting others a little slack..."

More lines = more traffic

Is teleportation possible? Could a baseball transform into something like a radio wave, travel through buildings, bounce around corners, and change back into a baseball? Oddly enough, thanks to quantum mechanics, the answer might actually be yes... sort of! Sajan Saini explains.

"We hear a lot about genius. We are taught to admire the minds of those infinite, baffling but astonishing geniuses like Einstein, Tolstoy or Picasso. Quite what genius might actually be is left a little vague. It's a codeword for 'brilliant but perhaps too other-worldly ever really to fathom.' We are invited to stand in awe at the achievements of geniuses but also to feel that their thought processes might be quasi-magical and that it is ultimately simply mysterious how they were ever able to come up with the ideas they have had..."

Scientists have discovered how to create a real life 'superlaser' using an ultra-pure diamond. How exactly does it work?2