It's not just man's closer primate relatives that exhibit brain power. Dolphins, dogs and elephants are teaching us a few lessons, too.

Dolphin brains involve completely different wiring from primates, especially in the neocortex, which is central to higher functions such as reasoning and conscious thought.

The rock was the star as the Los Angeles County Museum of Art pulled the covers off artist Michael Heizer's latest creation — a 340-ton boulder positioned to appear as though it's floating in midair.

About a thousand people showed up under sunny skies in Los Angeles as the gigantic work titled "Levitated Mass" was unveiled Sunday on LACMA's backyard, where it is intended to remain forever.

An earthquake hit a mountainous area of southwest China on Sunday, killing at least four people and injuring more than 100, state media reported.

The U.S. Geological Survey (USGS) said the quake had a magnitude of 5.5 and struck the border between the provinces of Sichuan and Yunnan just before 4:00 pm (0800 GMT), at a shallow depth of just 9.3 kilometers (5.8 miles).

NATO said it will hold an emergency meeting after Ankara on Sunday accused Syria of downing a Turkish jet in international airspace, raising fears that tensions could soar in the tinderbox region.

While admitting that a Turkish F-4 phantom jet briefly strayed into Syrian territory on Friday, Turkish Foreign Minister Ahmet Davutoglu said it was clearly out of it when it was shot down.

The founder of Chinese telecom equipment giant Huawei, which has faced security concerns in the U.S. and Australia, is calling for global cooperation to improve data protection.

Ren Zhengfei, in a rare public appearance at an economic forum on Friday, did not mention the controversy surrounding Huawei. But he warned data would be "vulnerable to attack again and again" because technology will develop faster than security. He gave no details of possible joint measures.

Zynga is starting to show ads from Facebook on Zynga.com, its stand-alone website that lets people play its online games away from Facebook.

Since players use their Facebook accounts to log in to Zynga.com, the ads will be targeted to them based the information that they already share on Facebook.

At least 30 people in Georgia have contracted anthrax this year, prompting authorities to step up safety measures, medical officials said Friday.

Georgia's Center for Infectious Diseases said that by year's end the ex-Soviet nation is expected to roughly match last year's total of 59 cases. That would represent a marked increase from the 28 anthrax cases the Caucasus Mountains country had in 2010.

Electric car maker Tesla's first mass-market sedans took to the road Friday, but it's not certain whether their debut will make or break the fledgling company.

Ten of the sedans, called the Model S, rolled out the door at the company's Fremont factory during a ceremony that had the feel of a pep rally.

Turkey searched for a missing fighter-jet and held an emergency security summit Friday, as the prime minister backed off reported comments suggesting Syria had downed the aircraft.

The military plane -- reportedly an F-4 Phantom with two pilots aboard -- lost radio contact and vanished off radar screens around 0900 GMT over the eastern Mediterranean, near the border with Syria.

Six-time champion Boca Juniors is through to another Copa Libertadores final after holding Universidad de Chile to a 0-0 draw on Thursday, winning the semifinal 2-0 on aggregate.

The Argentine club had won the first leg 2-0 last week at home and managed the scoreless result in Chile to clinch its 10th final in Latin America's premier competition.