HEATKEYS

Twitter is without a doubt the best way to share and discover what is happening right now.

The Library of Congress. The Library of Congress is the nation

The Space Weather Prediction Center, part of NOAA

The Ready Campaign of the Federal Emergency Management Agency, educating and empowering Americans to prepare for emergencies including natural disasters and potential terrorist attacks.

CrunchBase is the free database of technology companies, people, and investors that anyone can edit.

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

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Digital Photography Review: All the latest digital camera reviews and digital imaging news. Lively discussion forums. Vast samples galleries and the largest database of digital camera specifications.

A U.S. Department of Energy Office of Science national lab that brings science solutions to the world.

A place to ask questions, voice opinions and find friends.

Crie e publique questionários online em minutos e exiba os resultados em forma gráfica e em tempo real. A SurveyMonkey fornece questionários online gratuitos e software de questionário.