Articles on Greenhouse gases

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Planes can create clouds of tiny ice crystals, called contrails, and some studies suggest they could have an a significant effect on climate. from www.shutterstock.com

Climate explained: how much does flying contribute to climate change?

Globally, emissions from air travel account for only about 3% of the warming human activities are causing, but aviation affects our climate in a number of ways.
Swedish teenage climate activist Greta Thunberg speaks as she takes part during the Climate Strike in New York. Tens of thousands of protesters joined rallies on Sept. 20 as a day of worldwide demonstrations calling for action against climate change. (AP Photo/Eduardo Munoz Alvarez)

After Greta Thunberg’s UN address, an ethicist weighs in on our moral failure to act on climate change

The kids are right when it comes to climate change, says an ethicist: adults have a moral and ethical responsibility to take the necessary actions to stop climate change.
In India, air conditioning system vendors waiting for customers during an episode of high heat. Raveendran/AFP

How we can keep our planet cool even as A/C use rises

As our planet warms, the number of air-conditioning units worldwide is expected to triple by 2050 – yet their use drives climate change. So how can we break the cycle?
On June 5-6, 2012, NASA’s Solar Dynamics Observatory collected images of one of the rarest predictable solar events: the transit of Venus across the face of the Sun. NASA/SDO, AIA

Why we need to get back to Venus

This hot, acidic neighbor with its surface veiled in thick clouds hasn't benefited from the attention showered on Mars and the Moon. But Venus may offer insights into the fate of the Earth.

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