Stories by Alan Hall

Researchers now understand how H₂O's unique properties result from its bonds

Satellite data reveal how lightning influences climate

Structures can be designed to create auditory effects

"The area of below normal sea surface temperatures continues to expand in the central equatorial Pacific, marking the demise of the 1997/1998 El Ni¿o episode and the further evolution of La Ni¿a (Cold episode) conditions. If current trends continue, La Ni¿a conditions can be expected by late Northern Hemisphere summer to early fall."

Will Russia's latest failure to deliver a key component derail the International Space Station?

Photonic crystals promise advances in communications and optical computers

The research ship Atlantis and her companion submersible, Alvin, explore the strange world of an undersea volcanic ridge

The first of four telescopes at a new European observatory opens its eye on the cosmos

On April 29, 1998, astronauts aboard the space shuttle Columbia snapped this picture of the New York metropolitan area. This, and other, amazingly clear images were made as the shuttle Columbia swept around the Earth once every 90 minutes in an orbit that varied from 154 to 137 nautical miles in altitude

A conference celebrates the advances of the past 25 years and examines why disparities still persist

A stone circle in Egypt is the world's oldest astronomical observatory

A low-budget spacecraft confirms that water exists at the Moon's poles

An asteroid striking land would be catastrophic, but the damage might be far worse if it crashed into the sea

Balloonists vie to be the first to ride the prevailing winds around the globe