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Sorry, you can’t plant enough trees to offset fossil fuels

Ever planted a tree to feel better about your environmental footprint? It's a good idea, but it might not have as much of an effect as you'd hope. A simulation-based study has determined that it would be utterly unrealistic to plant enough trees to o...
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Get your own bag of (real) moon dust for just $4 million

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On the outside, the plain white bag seems unremarkable. But inside, it's laced with an exquisite and extremely valuable material: moon dust. 

Neil Armstrong stuffed this sack with the world's first samples of lunar rocks during the Apollo 11 mission in 1969. Traces of dust still remain in the outer decontamination bag, which includes a label reading "LUNAR SAMPLE RETURN."

Sotheby's New York said the dinner plate-sized bag could fetch up to $4 million when it goes on the auction block on July 20 — the 48th anniversary of the Apollo 11's historic first moon landing.

More about Space, Nasa, Science, Space Photos, and Moon
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Doomsday seed vault upgrade protects against a warming Arctic

When melting permafrost poured into the entrance of the Svalbard Global Seed Vault, there was an understandable worry. What good is safeguarding the world's crops in the Arctic if even that area isn't immune to the threat of climate change? Well, you...
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Bacteria could lead to cleaner methane power

Methane as a greenhouse gas isn't all that eco-friendly when used for power, but scientists might have a way to keep the damage to a minimum. Penn State researchers have crafted microbial fuel cells that can convert methane into electricity right at...
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Microsoft’s true holographic display fits in your glasses

A lot of the technology billed as holographic, well, isn't. Not even HoloLens. Real holography requires a laser-generated 3D image, and it's no mean feat to stuff that into something you can comfortably wear. Microsoft just made some important pro...
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Live look at the ‘alien megastructure’ star may solve mysteries

Astronomers may have ruled out an alien megastructure as the likely cause behind KIC 8462852's strange dimming, but it's still mysterious -- and that's partly due to the lack of live data (as live as you can get for a star 1,277 light years away, at...
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Project recreates cities in rich 3D from images harvested online

 People are taking photos and videos all over major cities, all the time, from every angle. Theoretically, with enough of them, you could map every street and building — wait, did I say theoretically? I meant in practice, as the VarCity project has demonstrated with Zurich, Switzerland. Read More