Most of us don’t know that today is Earth Day, right? Guilty of charge, I’m one of those who are unaware that April 22 is Earth Day celebration. Celebrating Earth Day should have activities that focus on global warming awareness.Haven’t you noticed, it’s getting more and more hot each year? In our country, when month of December to February comes, the weather should be dropping below 36 degree Celsius. But due to global warming, the temperature is usually warm.