Posts by 

Deborah Byrd

4.5-magnitude aftershock rattles DC region

Some Virginia and Washington, D.C. residents woke up in the middle of the night last night to an aftershock from Tuesday's earthquake.

Colorado and East Coast earthquakes not related, says Rafael Abreu

EarthSky interviews a geophysicist about the August 22 and 23, 2011 earthquakes in Colorado and the U.S. eastern seaboard.

5.8 magnitude earthquake rattles Washington D.C. and U.S. East Coast

USGS says a 5.8-magnitude earthquake has rattled the U.S. East Coast. Parts of the Pentagon, White House and Capitol were evacuated.

5.3-magnitude earthquake in Colorado late night August 22

Eight earthquakes shook southern Colorado yesterday and last night (August 22 and 23, 2011) according to the USGS. The largest earthquake was magnitude 5.3.

A more holistic farming approach with water

Because food production requires 70 to 90% of available water resources in some areas, a new approach to holistic farming may be needed.

Antarctica has its first complete ice flow map

The animation illustrates ice flowing thousands of miles from the heart of the continent seaward on Antarctica to its coastlines. The map shows more detail.

Earth’s moon might be younger than we thought

Earth's moon was thought to be 4.57 billion years old, but a detailed analysis of lunar rock indicates it might be as much as 200 million years younger.

NASA confirms Earth isn’t expanding

The average change in Earth's radius is 0.004 inches per year, or about the thickness of a human hair, a rate considered statistically insignificant.

Fukushima reactor radiation release calculated

Measuring radioactive sulfur in California let researchers calculate how much radiation released from Fukushima reactors. Read more.

X-class solar flare August 9. Aurora alert in coming days

The sun emitted an X6.9 or X7 flare on August 9, 2011. X-flares are the biggest flares. Some radio blackouts might occur. Aurora alert in the next few days.