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If you want to go paleo in your diet, invest in a lawn mower. An examination of fossilized teeth from early humans and their ancient forebears reveals our ancestors switched from an ape diet of fruits and leaves to eating grasses and sedges about 3.5 million years ago.

Neda Ulaby looks at a new summer drama about foster families, which — perhaps surprisingly — strikes real foster kids as getting a lot of things right.

A federal insider trading probe focused on the hedge fund SAC Capital is causing investors to take action. Investors have pulled an estimated $3.5 billion from the fund in anticipation of additional developments.

The state has already sustained fire damage not normally seen until deep into the hot summer months. Fire departments and homeowners are now trying to prepare land and property for what's expected to be a long and destructive summer.

Starkly different views of Pfc. Bradley Manning were presented on the first day of his court-martial for providing classified data that WikiLeaks posted online. Manning is accused of aiding the enemy, specifically al-Qaida. Possible penalties for that charge include life in prison.

Oxana and Pavel Rucsineanu fell in love while living in a Moldovan hospital's tuberculosis ward. Now, several years later, Oxana has recovered, and she and the couple's new baby live in an apartment. But Pavel's infection has evolved into a deadly form of TB, which keeps him from joining his new son and wife.

Maximum punishments for the counts leveled against James Everett Dutschke range from five years to life in prison. He was arrested in April on suspicions that he sent letters containing the poison ricin to President Obama and other officials.

It's what happens when one party holds the White House and the other at least one congressional chamber. Subpoenas are launched like rockets at an enemy camp.

The court ruled Monday that police can routinely take DNA samples from people who are arrested but not yet convicted of a crime. The ruling compared DNA sampling to photographing and fingerprinting suspects when they are booked.

A scientist who studies tornadoes says there's still much to be learned about how they form and how to better forecast them. Still, the storm chasing and research communities will be reevaluating their procedures in the wake of three colleagues' deaths.