Ice Cores Reveal Oxygen is Slowly Disappearing From Earth's Atmosphere During the past 100 years, atmospheric oxygen has declined by a "speedy" 0.1 percent because of the burning of fossil fuels, researchers say.
Hydrogen Could Become the New Fuel for Cooking – Here's How The main drawback at present is the capital cost
Plane Completes its Record-Breaking Flight Around the Globe Using Only Solar Power The Solar Impulse 2 has made history.
How Green Are Solar and Wind Power Really? Does the clean energy generated offset the fossil fuel emissions of manufacturing to make them?
2015 Was a Record-Breaking Year for Clean Energy, Global Report Reveals Nearly a quarter of the world’s power needs could be supplied by renewables