The amazing abilities of the Darwin's bark spider are on high-definition display in a video that shows this tiny spider wafting more than 80 feet (25 meters) of webbing across a river.

Every Friday, Future Tense rounds up the best robot videos of the week. Seen a great robot video? Tweet it to @FutureTenseNow, or email us. This week, robotic arms spin webs, tag walls, and ...

But in space, there's no gravity, so spiders just float instead of dropping. Watch this time-lapse video of a spider spinning, hunting and capturing fruit flies aboard the International Space Station.