Environment
Human-built ‘beaver’ dams help save struggling streams
To help restore streams, ecologists and other scientists are taking tips from the rodents — and hoping some beavers also join in.
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Tech
Scientists Say: Technofossil
Experts predict that the durability of modern, human-made materials will give rise to a radical new form of fossil.
Experiments
Oceans
Experiment: Build your own beach!
Summer is a time for sun and sand. If you live inland, build your own mini beach in this science experiment.
Technically Fiction
Physics
Could a Star Wars lightsaber work?
The main problem with real-world lightsabers is that they would pass through each other. This means no intergalactic duels between Jedis and Siths.
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Let's visit the moon
Watch This
As winters warm, athletes must cope with harder snow and tricky ice
Ice arenas and artificial snow now dominate the winter Olympics. Athletes there — and everywhere — may need to adjust how they train and perform.
