696,559 articles

NASA scientists will join researchers from around the world to celebrate the 20th anniversary of the Montreal Protocol, an international treaty designed to reduce the hole in Earth's protective ozone layer. The United Nations Environment Program will host the meeting from Sept. 23-26 in Athens, Greece. NASA scientists study climate change and research the timing of the recovery of the ozone layer.

About 2 million people die of malaria every year, of which more than a million are children in sub-Saharan Africa. Malaria is caused by a protozoan parasite belonging to the genus Plasmodium, and Plasmodium falciparum is responsible for the most severe form of malaria. Due to the increasing incidence of resistance to existing drugs, there is a growing need to discover new and more effective drugs against malaria.

Although pictures can be appreciated in any language, digital image searches are often lost in translation. A new multilingual search tool, PanImages, makes the universal appeal of pictures available to all. A new multilingual search tool makes the universal appeal of pictures available to all. PanImages allows people to search for images on the Web using hundreds of languages.

Online social networks tend to be far larger than their real-life counterparts, but online users say they have about the same number of close friends as the real-life average person. The advent of online social networking sites like Myspace and Facebook is changing the average number of friends people have, with some users befriending literally thousands of others, according to researchers.