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Dinosaur-era feathers sealed in amberQuoteBits of filaments and feathers trapped in amber 79 million years ago offer an unusually wide-ranging view of what late dinosaurs and early birds were wearing.
Bits of filaments and feathers trapped in amber 79 million years ago offer an unusually wide-ranging view of what late dinosaurs and early birds were wearing.
The first video of tool use by a fish has been published in the journal Coral Reefs by Giacomo Bernardi, professor of ecology and evolutionary biology at the University of California, Santa Cruz.In the video, an orange-dotted tuskfish digs a clam out of the sand, carries it over to a rock, and repeatedly throws the clam against the rock to crush it. Bernardi shot the video in Palau in 2009.
The cost involved in energy storage is also drastically reduced. With existing technologies based on liquid electrolytes, it costs about US$7 to store each farad. With the advanced energy storage membrane, the cost to store each farad falls to an impressive US$0.62. This translates to an energy cost of 10-20 watt-hour per US dollar for the membrane, as compared to just 2.5 watt-hour per US dollar for lithium ion batteries.
100,000-year-old ochre toolkit and workshop discovered in South Africa