Techcular.com is best web site because it is provide great opportunity to participate in contest for win various items like laptop, iPhone, iPad etc.I like this site too much.I Suggest this site to all my frie...
What is global Warming ?
The term "global warming" refers to the increase in the average temperature of global surface air and oceans since about 1950, and to continuing increases in those temperatures.
The global warming hypothesis originated in 1896 when Svante Arrhenius, a Swedish chemist,...