Is it too late to save the healthy fish stocks of the Antarctic? Gerard Baker reports.
Britain's sand dunes are running out of time. Tom Heap joins the battle to save them.
Where will the next pandemic come from and how can it be stopped? Tom Heap investigates.
The peatlands of the British Isles are being destroyed. Tom Heap reports.
Young people are turning their back on the car. Tom Heap asks if it has a future.
Could there be a cheaper, safer way to create nuclear energy? Julian Rush investigates.
Raw sewage regularly pours into the River Thames. Alice Roberts looks for an answer.
Deer numbers are rising fast. Tom Heap asks what this means for the rural landscape.
Can we adapt disease-carrying insects to become friends not foes? Alice Roberts reports.
In San Francisco, recycling is so profitable that they're fighting over the trash.