Global warming is happening now, and scientists are confident that greenhouse gases are responsible. To understand what this means for humanity, it is necessary to understand what global warming is, how scientists know it's happening, and how they predict future climate.
Once the world’s fourth largest lake, the mighty Aral Sea is now in it’s death throws. Starved of it’s lifeblood of the waters of the Syr Darya and the Amu Darya rivers, the sea has been shrinking for the last 40 years.
Are the ozone hole and global warming related?What can we do about global warming?What if global warming isn’t as severe as predicted?Why is global warming a problem?Has the Sun been more active in recent decades, and could it be responsible for some global warming?If Earth has warmed and cooled throughout history, what makes scientists think that humans are causing global warming now?How do scientists know that Mauna Loa’s volcanic emissions don’t affect the carbon dioxide data collected there?Do satellite observations of atmospheric temperatures agree with surface-based observations and model predictions?What does NASA have to do with global warming?Are there natural processes that can amplify or limit global warming?If we immediately stopped emitting greenhouses gases, would global warming stop?If we stabilized greenhouse gas emissions at today’s rates, would global warming stop?
Via Dr. Stefan Gruenwald