Climate change: How can we make flying greener?
Biofuels, alternative flight routes and newer, more efficient aircraft can make flying better for the environment. How close are we…
US coal capital seeks greener future with less carbon emissions
The US government wants to turn domestic coalfields into green energy centers in an effort to combine climate protection with…
Yes, electric vehicles are greener than gas cars — even when they use dirty power
Lifecycle analyses of electric cars show that they produce much lower emissions over time than combustion-engine vehicles. Robert Knopes/UCG/Universal Images…