Intimidation

Featuring three incarnations of the Doctor, the Doctor Who 50th anniversary episode delved deep into the character's psyche. "It's the most ambitious episode we've ever done," said the show's boss, Steven Moffat.

A new study shows that kind children are more popular among their peers. Encouraging simple acts of kindness could help children to get along with classmates and even prevent instances of bullying.

Prince William is to marry girlfriend Kate Middleton, who admits that joining the British Royal Family is a "daunting prospect."

Tolkien gives his dragon a fearsome physicality and intelligence. Smaug is a figure who keeps you on your toes as he reminisces over the fine meal he made of your ponies.

Architecture on Antarctica is challenging. Shelter must be formidable enough to insulate inhabitants from unsurvivable weather, yet negligible enough to be taken away without leaving a trace.

The recent arrest of International Monetary Fund chief Dominique Strauss-Kahn for sexual assault has prompted other hotel maids to share stories of sexual harassment.

"Do not intimidate people. If you do, you'll never get a straight answer from anybody and you'll be defeating your own purpose."

Most of the get-ups look menacing, with their sharp teeth, wild fur and weapon-like accessories, but the festivals are actually a way for humans to usher in spring and celebrate life.

When threatened, the bombadier beetle uses a special chamber to mix two reactant chemicals. It creates a buildup that releases with a loud pop and cloud of foul-smelling gas.

Steven Spielberg's biographical drama portrays the 16th president of the United States as an ambivalent leader, not above twisting arms and exploiting the system to get the right thing done.