Your wallet ? not your address ? determines your CO2 emissions, study finds
Living in cities isn't necessarily greener. What matters is what you spend.
Rust-resistant wheat could ease climate threat to food supply
Scientists are close to developing resistant wheat strains, but getting them to farmers may be a challenge
Smarter food production key to curbing forest loss - study
With agricultural expansion a major driver of forest loss, finding ways to boost food production without cutting trees is key, researchers say