Kathy Willis examines new insights into plants as regulators of our planet.
Andrew Luck-Baker visits the Pacific islands of Palau to witness a mass spawning.
Ayisha Yahya explores predictions that some deserts could turn greener in the future.
Ayisha visits the Egyptian settlement of Abu Minqar.
Sir David guides us through the mean streets of the coral metropolis
Eleanor Rosamund Barraclough searches the Autumn forest, looking for stories.
Can Britain revive its forests and grow the wood we need for a greener economy?
Is the crisis in the UK's ash forests a vision of the future? Tom Heap reports.
Melvyn Bragg and his guests discuss photosynthesis.
Kathy Willis explores the harnessing of plants' ability to photosynthesise their own food.
How the first forests transformed the planet 380 million years ago.
Coral reefs are renowned for their beauty and diversity, but what is their future?
Folk singer Mari Kalkun tells us why we should stop and listen to the forest.
Could we live on another planet?
Eleanor Rosamund Barraclough on the cultural and ecological glories of the summer forest.