The ALMA telescope can make observations 24 hours a day, as long as there are clear skies in the Atacama. Even thin wispy clouds can block some of the incredibly faint signals ALMA struggles to hear from the distant cosmos.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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