Zoobombing: Portland phenomenon of grown-ups speeding downhill on kiddie bikes (Video)

What began as an impromptu nighttime ride is now a weekly Portland institution, which characterizes itself as an "open source bike club" that emphasizes thrills, creativity and of course, safety.

Photo: Spiderweb sparkles in the dew

This web is strewn with beads of dew.

Mantis Murder Shrimp Strikes Again (Video)

If humans could strike as hard as a peacock mantis shrimp, we'd be able to throw a baseball into space...

Ideas why 0 bikers have been killed on bike-sharing bikes

When Mike reported on the fact that there have been 23 million bike-sharing rides in the US since 2007 and 0 deaths, one of the first things I thought was, "How could that be?" A couple of ideas rather quickly popped into my head.

Photo: Ruby-throated hummingbird

This hummingbird was spotted in California, a pretty long way from this bird’s typical territory.