Inspired by a desire to make finding space physics information as easy as book lovers locate a text on Amazon.com, the heliophysics virtual observatories offer a wealth of resources to learn more about the sun, Earth and heliosphere.

The frequency of extremely high clouds in Earth's tropics -- the type associated with severe storms and rainfall -- is increasing as a result of global warming, according to a recent study.

Did you know that flight crews on high-latitude routes are exposed to more radiation on an annual basis than nuclear plant workers?

China had clearer skies and easier breathing in mind in the summer of 2008 when they temporarily shuttered some factories and banished many cars in a pre-Olympic sprint to clean up Beijing's air.

A comprehensive Mission Operations Readiness (MOR) review of the National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) was successfully completed last month.

Earth's magnetic field, which shields our planet from particles streaming outward from the sun, often develops two holes that allow the largest leaks, according to researchers sponsored by NASA and the National Science Foundation.

Oceanography data that will help scientists around the world better understand climate change are now available.

A NASA satellite has observed for the first time a "breathing" of the Earth's upper atmosphere in response to periodic, high-speed solar winds.

Observations made by NASA instruments onboard an Air Force satellite have shown that the boundary between the Earth's upper atmosphere and space has moved to extraordinarily low altitudes.

Hurricane, tropical storm and tropical depression rainfall caused many severe floods and numerous lost lives during the 2008 north Atlantic hurricane season.

A NASA-funded study describes how extreme solar eruptions could have severe consequences for communications, power grids and other technology on Earth.

The latest image of sea-surface height measurements shows the Pacific Ocean remains locked in a cool pattern.

When scientists or the media talk about global warming, climate change or global change, the terms are sometimes used interchangeably. What's the difference?

Analyzing anthropogenic signals in the climate records requires the ability to distinguish them from natural effects with similar time scales.

Regulation of pollutants often treats their air quality and climate change effects separately, but a unified approach may produce better results.

Although global temperatures were cooled by La Niña early in the year, the 2008 meteorological year was among the ten warmest since reliable recordkeeping began.