In this WHO Science in 5-episode Dr Etienne Krug, Director of Social Determinants of Health, shares examples of cities that are taking action on greener more sustainable transport that can also help keep people healthier and safe.

For example, Mexico City, Mexico has increased cycling lanes while making roads safer Cali, Colombia has sent out bike doctors to help repair bikes and Lusaka, Zambia created safer routes for children to get to school.

Why is Dengue fever spreading to places it did not exist before? What are the symptoms and treatments? What about vaccines? Dr Raman Velayudhan explains in Science in 5.

Disease X

How are scientists working to prevent the next pandemic? What do countries need to do to prepare? Dr Ana Maria Henao-Restrepo outlines the R&D needs that the world needs to invest in to prevent and prepare for the next pandemic.

WHO's Science in 5 / Episode# 113 -- Did you know that where you live, the food systems around you and your opportunities to be active increase your risk of developing obesity? How big is this issue? How can you reduce your risk and protect yourself? WHO's Dr Francesco Branca explains in Science in 5.

If you have suffered from COIVID and are still feeling the symptoms, could it be Long COVID? What are the symptoms? Are treatments available? WHO's Dr Jamie Rylance explains in science in 5.

WHO and the International Labor Organization (ILO) recently released estimates on how many workers are exposed to intense sunlight at work and how many of them develop non melanoma skin cancer. How does long exposure to sunlight cause skin cancer? Who is at risk? How can you, your employer and your Government protect you? Dr Frank Pega explains in Science in 5

You may have heard about substandard or falsified syrup harming children and even causing deaths. There have been reports of falsified diabetes and weight loss treatments. How can you protect yourself? How does WHO keep you safe from substandard or falsified medical products ? WHO's Pernette Bourdillon Esteve explains in Science in 5.

Did you know that 70% of the people who need eye glasses do not have access to them? What are the leading causes of blindness? Who is at risk and how can you prevent it? Dr Stuart Keel explains in Science in 5 this week.

Did you know that more and more children are having trouble seeing things that are at a distance? What are the early signs? How would you know if your child is at risk and what can you do to protect your child's vision? Dr Stuart Keel explains in Science in 5

Climate change is affecting your health every day. What are the future scenarios for health? How can you cope and protect your health? Dr Diarmid Campbell-Lendrum explains in Science in 5.