Annual cost of weather may total $485 billion in U.S.

New analysis may be able to estimate the cost of weather on the U.S. economy. Read more about the new study's economic analysis here.

Tropical Storm Arlene forms as clouds gather

Watch a video that shows tropical storm Arlene as it forms in the Gulf of Mexico on June 27, 2011.

Loggerhead turtles have predictable movements

A ten-year study shows that loggerhead turtles go back to the same spots year after year.

Arizona Wallow Fire scar seen from space

A June 21 satellite image of the Arizona Wallow fire shows the fire's burn scar as seen from space.

Humpback whales make bubble nets with beauty and precision

Humpback whales blow vertical columns of bubbles to herd and corral their prey. Learn more about these beautiful and precise creations.

SpongeBob gets a fungus named for him

Dennis Desjardin named a newly identified mushroom species - a native of Borneo - Spongiforma squarepantsii for Spongebob Squarepants.

Busy 2011 Atlantic hurricane season, with Chris Landsea

NOAA predicts a busy 2011 season for Atlantic hurricanes. Chris Landsea of the National Hurricane Center explains more about the 2011 Atlantic Hurricane season.

Peak water limits with Peter Gleick

Our water use has the potential to reach peak limits. Water expert Peter Gleick said we've already hit peak limits in many parts of the world. Read more about peak water.

Beautiful barrier islands seen from space, as sea level rises

If you love Earth's oceans, check out this NASA survey - released in spring 2011 - offering new insights about barrier islands.

2011 Gulf of Mexico dead zone biggest ever?

Biological oceanographer Nancy Rabalaisthe speaks with EarthSky about how the extreme flooding of the Mississippi River in spring 2011 might result in the largest-ever dead zone in the Gulf of Mexico.