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7 Massive Meteor Craters

Becky Kellogg | TWC
Published: February 19, 2013

Oldest Asteroid Impact, Greenland

Yvette Cardozo/Getty Images

File photo of a small Inuit village in Greenland.

Perhaps, the oldest asteroid impact crater was found in Greenland. The approximately 62-mile wide crater and is believed to have hit Earth more than two billion years ago. Finnefjeld Mountain, which is more than 3,000 feet high, is believed to be the crushed core of the structure.


Featured Blogs

93L in Eastern Atlantic Growing More Organized

By Dr. Jeff Masters
July 28, 2014

An area of disturbed weather located near 10°N, 33°W at 8 am EDT Monday, about 500 miles southwest of the Cape Verde Islands, was designated Invest 93L by NHC early Monday morning. This disturbance is a more serious threat than Tropical Depression Two of last week, and has the potential to develop into a strong tropical storm before reaching the Lesser Antilles Islands on Friday or Saturday.

June 2014 Global Weather Extremes Summary

By Christopher C. Burt
July 26, 2014

June was globally the warmest such on record according to NOAA/NCDC. See Jeff Master’s blog about this posted last Thursday. The month featured heat waves in portions of Japan, China, Western Europe, Central Asia, and Mexico. Late season cold and even some snowfall were observed in Estonia, Russia, and Scandinavia mid-month. Deadly flooding occurred in Bulgaria, Paraguay, Afghanistan, India and Sri Lanka. An intense dust storm struck Tehran, Iran on June 2nd. Yet another intense hurricane (Cristina) formed in the Eastern Pacific.

Live Blog: Tracking Hurricane Arthur as it Approaches North Carolina Coast

By Shaun Tanner
July 3, 2014

This is a live blog set up to provide the latest coverage on Hurricane Arthur as it threatens the North Carolina Coast. Check back often to see what the latest is with Arthur. The most recent updates are at the top.

Tropical Terminology

By Stu Ostro
June 30, 2014

Here is some basic, fundamental terminology related to tropical cyclones. Rather than a comprehensive and/or technical glossary, this represents the essence of the meaning & importance of some key, frequently used terms.

2013-14 - An Interesting Winter From A to Z

By Tom Niziol
May 15, 2014

It was a very interesting winter across a good part of the nation from the Rockies through the Plains to the Northeast. Let's break down the most significant winter storms on a month by month basis.

What the 5th IPCC Assessment Doesn't Include

By Angela Fritz
September 27, 2013

Melting permafrost has the potential to release an additional 1.5 trillion tons of carbon into the atmosphere, and could increase our global average temperature by 1.5°F in addition to our day-to-day human emissions. However, this effect is not included in the IPCC report issued Friday morning, which means the estimates of how Earth's climate will change are likely on the conservative side.