VS1 - VS2: You can see flaws with a 10X microscope, but it takes a long time (more than about 10 seconds). SI1 - SI2: You can see flaws with a 10X microscope. I1 - I3: You can see flaws with the naked eye. Consider avoiding I2-I3 diamonds. REMEMBER: For grades IF through SI, a diamond's clarity grade has an impact on the diamond's value, not on the unmagnified diamond's appearance. While Flawless diamonds are the rarest, a diamond does not have to be flawless to be stunning.
Global Warming affects us all, every living thing. Understanding the risks and what can be done to stem Global Warming effects are being addressed at all levels â individual, community, government agency and organization and at the international level. Below you will find some information about who is doing what.
Substantial scientific evidence indicates that an increase in the global average temperature of more than 2Â°F above where we are today poses severe risks to natural systems and human health. To avoid this level of warming, the U.S. needs to reduce heat-trapping emissions by at least 80 percent below 2000 levels by 2050. Boosting energy efficiency: The energy used to power, heat, and cool our homes, businesses, and industries is the single largest contributor to global warming. 2  Energy efficiency technologies allow us to use less energy to get the sameâor higherâlevel of production, service, and comfort.