This creature is like a worm with two little arms! It's known as a Bipes ... but they're more closely related to the small lizards. Other reptiles have lost their limbs over time, but the Bipes ...

Why do T-Rexes have small arms? Asks Grigor from Switzerland. T-rexes might be the first thing people imagine when they think "dinosaur", and for good reason; they're big, scary and... have tiny arms?

Research has demonstrated that this worm can use its eyes to see small objects and track their movements. "It's really interesting because an ability like this is typically reserved for us ...

How such a rapid diversification of life occurred has long fascinated researchers ... which often turns into a kind of "arms race." For example, fungi creating antibiotics against bacteria ...