We could be encouraging antimicrobial resistance by overusing antibiotics but other factors may also be at play. We spoke to researchers going beyond the clinic to understand how drug-resistance builds up in the bacteria in our sewers and rivers.

Scientists are developing a new way to track the origins of phosphorus pollution in our rivers and understand how it behaves once it gets there.

Dave Reay explores the tangled web of nitrogen and global climate change.

Scientists agree: flood damages will increase dramatically across Europe over the coming decades. And as extreme rainfall events happen again and again, some places will be hit harder than others. So why is it that some areas are becoming more prone to flooding, and others not? Louise Slater explains.

Hidden from view at the bottom of Bangladesh's large rivers are gigantic holes up to 50m deep and several kilometres long. Mark E Vardy explains how studying them is vital for understanding how large rivers evolve and affect the lives of hundreds of thousands of people living on their deltas.

Nobody wants peat in their tap water, and in some situations it can even threaten people's health. Getting rid of it is costly for water companies, and a warming climate will increase the problem. The more they know about these changes, the better they'll be able to cope.

This week in the Planet Earth podcast, Alex Ford and Stephen Short of the University of Portsmouth explain why we need to understand the effects of contraceptives, anti-depressants and other prescription drugs on marine organisms to protect our environment.

This week in the Planet Earth podcast, Greg Sambrook Smith of the University of Birmingham reports from Bangladesh on the effects of river bank erosion on the local people living alongside the Brahmaputra River.