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It’s the end of an algal era: Exxon is backing out of a biofuel effort that the company has for years centered as part of its work in clean energy.
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This story was originally published by Grist. You can subscribe to its weekly newsletter here.

A neo-Nazi leader and a Maryland woman planned to attack electrical substations, which form the interface between the distribution grid and transmissions systems, around Baltimore in an attempt to permanently “lay this city to waste,” according to the FBI.

Rolls-Royce Holdings is getting into the spaceflight industry. The British aerospace engineering company says it’s developing a micro-nuclear reactor that the company hopes could be a source of fuel for long trips to the Moon and Mars.