From 2030, methane emissions caused by flatulence from cattle and pigs will be taxed at a rate of 300 kroner ($43) per tonne of CO2 equivalent.

Methane -- which is potent but relatively short-lived -- is a key target for countries wanting to slash emissions quickly and slow climate change.

Europe and Russia are about to launch a joint mission to the Red Planet.

The Cassini probe is all set to make a daring close flyby of Enceladus, an ice-rich moon of Saturn.

A planet 100 light-years away resembles an infant version of Jupiter, astronomers say.