Google is also investing a second round of money into Commonwealth to spur development of its demonstration tokamak – a donut-shaped machine that uses massive magnets and molten plasma to force two ...

Amazon also offers Kids versions of the Kindle ($129.99) and Paperwhite ($179.99). Both bundle the regular Kindle or Paperwhite with a child-friendly case, a six-month trial of Amazon Kids+, and a ...

Mar. 20, 2025 — Lithium-6 is essential for producing nuclear fusion fuel, but isolating it from the much more common isotope, lithium-7, usually requires liquid mercury, which is extremely toxic.