Caz Graham visits Castle Howard, where Christmas tree sales are in full swing.
BBC Radio 4
Tiny plastic particles have been found polluting the deep ocean sediment.
25/25 Amazing facts about Otto, an orang-utan who lives in the rainforests of Sumatra.
A look at nebulae, dust and gas clouds which play a role in the birth and death of stars. (R)
The latest Earth news from the AGU Meeting
BBC World Service
3/3 Helen Czerski shows how the earth's angle of tilt creates the most extreme weather. (R)
Tiny plastic particles have been found polluting the deep ocean sediment. (R)
Looking at how the small town of Fengjiang, located south of Shanghai deals with recycling (R)
2/2 Jim Al-Khalili investigates whether quantum physics might solve mysteries in biology. (R)
Documentary telling the story of how the Russians led us into the space age. (R)