An elephant killed a 28-year-old Thai man and injured his colleague as they were eating dinner at a beachside restaurant in eastern Thailand, police said on Wednesday.

The local telecoms employee died in hospital after the elephant gored his chest with its tusk as he ate hotpot with a fellow worker in the coastal city of Rayong late Monday.

Cleaner air worldwide would save two million lives a year and not only in the most polluted countries, a study released Tuesday found.

"We were surprised to find the importance of cleaning air not just in the dirtiest parts of the world -- which we expected to find -- but also in cleaner environments like the U.S., Canada and Europe," co-author Julian Marshall of the University of Minnesota said in the study published by Environmental Science & Technology.

Question: When is a Minute Not a Minute?

The answer: At 2359 Greenwich Mean Time (GMT) on June 30, when the world will experience a minute that will last 61 seconds.

A devastating earthquake that hit Nepal in April moved Mount Everest three centimeters (just over an inch) to the southwest, but did not change its height, according to Chinese research published on Tuesday.

The 7.8-magnitude quake reversed the gradual northeasterly course of the world's highest peak, which straddles Nepal and China, the National Administration of Surveying, Mapping and Geoinformation found.

An ambitious attempt to circumnavigate the globe in a solar-powered plane is facing a "moment of truth" after two weeks of bad weather that have left it stuck in Japan, its pilot said Tuesday.

With frustration starting to build a fortnight after Solar Impulse 2 made an impromptu landing in Nagoya, it was vital to keep a cool head about the best time to begin the next leg to Hawaii, Andre Borschberg told Agence France Presse.

An unpredictable, yet scorching and dry climate kept large, grass-eating dinosaurs out of the tropics for some 30 million years after they first appeared on Earth, a study out Monday found.

It has been a longstanding mystery: why did long-necked dinosaurs seem to avoid the tropics when there were many different types of them lived at different latitudes well north and south of the equator? There are fossil remains, however, of meat-eating dinosaurs in the tropics.

Europe's robot lab Philae has made followup contact with Earth more than a day after sending home its first message in nearly seven months since landing on a comet, its ground operators said Monday.

The lander reestablished contact early Monday morning GMT, and is now "completely awake", Jean-Yves Le Gall, president of the French CNES space agency told television station France 2.

A five-meter (16-foot) crocodile has put on a spectacular display for a passing tour boat, attacking and chomping on a smaller croc before plunging it into an unsurvivable "death roll".

British trainee guide Nikki Davies said one or two of the fearsome predators were usually spotted during cruises in the Kakadu region of northern Australia.

Europe's comet lander Philae has woken up overnight after a months-long sleep, hurtling towards the Sun in deep space, the president of France's CNES space agency said Sunday. 

"We received new signals from (Philae) for a period of two minutes, as well as 40 seconds worth of data," Jean-Yves Le Gall told Agence France Presse.

Six scientists who were living under a dome on the slopes of a dormant Hawaii volcano for eight months to simulate life on Mars have emerged from isolation.

The crew stepped outside the dome that's 8,000 feet (2,400 meters) up the slopes of Mauna Loa to feel fresh air on their skin Saturday. It was the first time they left without donning a space suit.