08 Jan '12, 8pm

Escala UV vigente en los EEUU (01 - 11+)

The UV Index scale used in the United States conforms with international guidelines for UVI reporting established by the World Health Organization . Learn how to read the UV index Scale to help you avoid harmful exposure to UV radiation. 2 or less: Low A UV Index reading of 2 or less means low danger from the sun's UV rays for the average person: Wear sunglasses on bright days. In winter, reflection off snow can nearly double UV strength. If you burn easily, cover up and use sunscreen. Look Out Below Snow and water can reflect the sun's rays. Skiers and swimmers should take special care. Wear sunglasses or goggles, and apply sunscreen with an SPF of at least 15. Remember to protect areas that could be exposed to UV rays by the sun's reflection, including under the chin and nose. 3 to 5: Moderate A UV Index reading of 3 to 5 means moderate risk of harm from unprotected sun ...

Full article: http://www.epa.gov/sunwise/uviscale.html


Green City Index

siemens.com 07 Jan '12, 6pm

How are cities in different parts of the world performing with respect to urban environmental sustainability? The Green Ci...