USB-enabled devices (or two AA batteries) can be recharged with this solar charger, which features thin, lightweight, flexible solar cells.
Credit: Christopher Harting
Product: Be Prepared USB+AA Solar Charger
Other products in this section:
The race is on to define the new blockchain era. Get a leg up at Business of Blockchain 2019.Register now
A “halo drive” could accelerate interstellar spacecraft to close to the speed of light
Borrowing energy from black holes would offer a highly efficient way to navigate our galaxy, an astronomer says.
Ten big global challenges technology could solve
None is easy, but all are incredibly important.
The new, safer nuclear reactors that might help stop climate change
From sodium-cooled fission to advanced fusion, a fresh generation of projects hopes to rekindle trust in nuclear energy.