This week in the Planet Earth Podcast, why scientists are working with the National Trust to restore the chalk grasslands around Stonehenge; how researchers are using satellites to study microscopic plants; and the etiquette of dining and bullying in baboons.

This week in the Planet Earth Podcast, how scientists are using fish scales to figure out why the UK salmon population is falling; and how carbon dioxide emissions from power stations could be used to make household bricks.

This week in the Planet Earth Podcast: why scientists are planning on drilling three kilometres beneath the Antarctic ice sheet in one of the most ambitious exploration projects ever undertaken; and how worms that feed on dead whale bones at the bottom of the ocean may be distorting the whale fossil record.

This week, why understanding rip currents at Perranporth in north Cornwall could help save lives; how exactly does carbon capture and storage (CCS) work and how can scientists be sure that carbon will be stored forever?

This week in the Planet Earth Podcast, why weathermen are using a converted World War II bunker to monitor clouds; how thug species such as bramble, nettle and bracken can be just as damaging to woodlands as alien plants; and why scientists are going to Greenland to deploy a network of sensors in some of the country's glaciers.

This week in the Planet Earth Podcast - what UK farmers are doing to protect the country's vanishing bumblebees, butterflies and other pollinating insects; how scientists are trying to figure out how many types of microbes there are on our planet and why they all matter; and why birds are more amazing than we ever imagined.

This week in the Planet Earth Podcast - the cunning tricks the cuckoo uses to get another bird to do the parenting, why researchers are studying snow in Sweden, and how an improved radiocarbon dating technique may put a few scientists' noses out of joint.

This week in the Planet Earth Podcast, why removing some man-made coastal flood defences might not be such a harebrained idea, what it's like studying gas exchange in the wilds of the Southern Ocean, and, in what could be the first case of 'natural' geoengineering, how forests could be whitening the clouds right above them.

This week in the Planet Earth Podcast: how a specially-designed twin turboprop research plane is helping scientists in a huge range of subjects from archaeology to ecology, and why a violent space storm could spell trouble for communications systems across the world.

This week in the Planet Earth Podcast, how last year's eruption of the Eyjafjallajkull volcano in Iceland gave scientists an unparalleled opportunity for research, and why sediment from rivers like the Thames can act like time machines to bygone eras.