What did researchers at the World Resources Institute (WRI) define as the biggest barrier to producing renewable energy in the developing world?

Should we ban the use of the chemical?

The chemical that

• is a key ingredient in most pesticides

• contributes to environmental hazards, such as acid rain, the greenhouse effect, and soil erosion

• helps to spread pollutants that are present in all contaminated rivers, lakes, and oceans

• is used in vast quantities by every industry on Earth

• can produce painful burns to exposed skin

• causes severe illness or death in either very low or very high concentrations in the body

• is legally discarded as waste by individuals, businesses, and industries

• has been studied extensively by scientists throughout the world

Which country developed the first windmill?

Finish this sentence: in just one hour, the sunlight which falls on the earth produces enough energy to power the whole world for ...

What type of supermarket bag is more eco-friendly, paper or plastic?

Hybrid cars are slower and less safe than conventional cars.

Approximately how much global electricity output is produced from renewable sources?

Which of the following is an alternative material for making paper?

What is biomass?

One problem with ____ energy is that it produces radioactive waste.