Investigators in hazardous materials suits spent most of Saturday executing a search warrant at a three-story apartment building in downtown Spokane.

NPR: FBI: Arrest Made In Wash. State Ricin Letter Scare

Before that, he spent a decade running the materials research institute at Princeton University, and nearly as much time at Exxon, in charge of research and development.

NEWYORKER: The Climate Fixers

Some of them may be spent on technology, on building materials, on school materials.

WHITEHOUSE: Press Briefing

I've spent the last decade going through these materials, and the items are just wonderful, in terms of historical documents.

NPR: The Significance of MLK's Personal Papers

Too bad for his students he stayed as long as he did, because that was a week they could have spent learning physics, and other important materials.

FORBES: Tools become out-of-date

American efforts, he argues, would be better spent trying to prevent further proliferation of nuclear materials.

BBC: The US and India: Moving closer

Christie's in New York will be selling the collection of Dean Edell, surgeon turned radio-and-TV doc, who has spent the last 20 years cultivating a passion for such materials.

FORBES: Magazine Article

Bloom executives said the company spent years developing a proprietary seal made from low-cost materials to prevent cracks and leaks.

FORBES: The Economics of Bloom Energy's 'Breakthrough' Fuel Cell

Intelligence analysts have spent the months since bin Laden was killed sifting through documents, letters, video and other materials retrieved from his compound in Abbottabad, Pakistan.

WSJ: Bin Laden Plotted to Kill President Obama, Documents Show

When over an hour a day is spent driving by many, when we spend inordinate amounts of time shuttling people, packages, materials, etc, when humans are terrible at mundane tasks such as driving, how can it not be desirable, even necessary, to move to autonomous driving?

FORBES: Why Google Will Lose in Driverless Cars (and Who Will Win)