A Yale University-led study has found that using more wood and less steel and concrete in building and bridge construction would substantially reduce global carbon dioxide emissions and fossil fuel consumption.
Limited availability of fossil fuels stimulates the search for different energy resources. The use of biofuels is one of the alternatives. Sugars derived from the grain of agricultural crops can be used to produce biofuel but these crops occupy fertile soils needed for food and feed production.
It's the wild card in the renewables vs. fossil fuels debate: What price to put on carbon dioxide, which exacts social costs that escape capture by the free market?
President Obama wants to lower the corporate tax rate while eliminating numerous loopholes.
When it comes to electric vehicles (EVs), one of the claims that has long been debated is the alleged savings in greenhouse gas emissions.
There was a leveling off of the amount of methane in the atmosphere towards the end of the last century - and scientists can't agree on why it happened.
For small islands, the incentive to end dependence on imported fossil fuels and embrace renewables is powerful.
Biofuels may not be the greenest option for airlines after all, says MIT, and can sometimes result in higher greenhouse gas emissions than traditional fossil fuels.