MIAMI (Reuters) - Warmer sea temperatures are linked to the severity of a coral disease, according to a study on Australia's Great Barrier Reef that offers a dire warning about global warming's potential impact on the world's troubled reefs.

WASHINGTON (Reuters) - A gargantuan explosion ripped apart a star perhaps 150 times more massive than our sun in a relatively nearby galaxy in the most powerful and brightest supernova ever observed, astronomers said on Monday.

TOKYO, May 7 (Reuters) - Japan's NTT DoCoMo Inc. (9437.T: Quote, Profile, Research said on Monday it had scrapped a plan to offer its wireless Internet technology to Hutchison Essar as Britain's Vodafone Group Plc (VOD.L: Quote, Profile, Research is set to buy a majority stake in the Indian mobile phone carrier. 

LAS VEGAS (Reuters) - Comcast Corp., the leading U.S. cable operator, said on Monday it will integrate its e-mail and voice messaging services in a new Web-based communications center called SmartZone.