Planet Earth: 8 billion humans and dwindling resources

Are eight billion humans too many for planet Earth? As we reach this milestone on November 15, most experts say the bigger problem is the overconsumption of resources by the wealthiest residents.

Climate Questions: Does what I do matter?

Can people's individual actions make a difference in how much carbon dioxide is emitted on an international scale? International organizations like the United Nations have called on individuals to limit their carbon footprint ...

Land-based climate plans 'unrealistic': report

The world needs to set aside an area bigger than the United States for tree planting and other measures to meet climate pledges, according to research published Tuesday that warned against "unrealistic" carbon-cutting plans.

UN weather agency: Greenhouse gases reach new record in 2021

The three main greenhouse gases hit record high levels in the atmosphere last year, the U.N. weather agency said Wednesday, calling it an "ominous" sign as war in Ukraine, rising costs of food and fuel, and other worries ...

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