In August, Horizon takes a look at the quest to make Europe’s cities environmentally sustainable, while also ensuring a healthy and prosperous population. We speak to geographer Professor Harriet Bulkeley on why cities have such an important role in fighting climate change, what it means for a city to be sustainable and the big challenges that lie ahead. We look at the construction of zero-energy housing, homing in on the case of Nottingham, UK, and find out how scientists are putting nature back into the old Spanish capital of Valladolid. We also talk to the city officials breathing new life into historical buildings in Bologna, Italy, and learn how urban planners and architects are taking emotional feedback into account when designing new public spaces and homes.
Lining rundown historic areas of cities with plant life and smart sensors and reusing old buildings for new purposes are helping to breathe new life into Europe’s decaying urban spaces.
Cities across Europe are trialling schemes such as roof gardens and ‘mobile forests’ to embed more nature into urban areas in an effort to protect their citizens from climate change events like heatwaves, floods and droughts.
As the world moves towards a carbon neutral future, many different areas from industry to manufacturing are working to reduce their emissions. But scientists are beginning to look at a different area – houses – to work out if it’s possible to reduce emissions from Europe’s homes to zero by retrofitting on a mass scale. And the early signs are promising.
Virtual reality and scenario-testing models are being built to help urban planners and architects get real-time feedback about the impact of their designs on mental health, particularly for older people.
Cities have a critical role to play in fighting climate change but hard conversations lie ahead about the best way to achieve the transition to sustainability, according to Harriet Bulkeley, professor of geography at Durham University, UK.
Private companies are increasingly active in the space sector – from high-profile businesses such as SpaceX or Virgin Galactic to the nearly 3,000 small businesses that provide elements for the European Space Agency’s space programme. In March, Horizon explores the impact of this on research and innovation. We speak to a space law researcher about how to avoid the problems emerging from an increasingly crowded orbit, such as collisions. We look at how to minimise the environmental impact of satellites and delve into efforts to build a reusable European launcher for small payloads. We also look at the challenge of assembling, maintaining and repairing objects in space and the developments in space robotics that could help.
More than 30% of car journeys in Europe are under 3km long and could potentially be swapped for different, greener, forms of transport. In February, we look at alternative ways of getting people and goods around cities - a challenge known in the industry as the problem of the ‘last mile’. We speak to Karen Vancluysen of cities network POLIS, who says that cities may have to introduce some unpopular measures to change the way people move around, and we look at how soon commuters will be able to rely on automated shuttles to ferry them from door to door. We delve into the environmental problems caused by unsuccessful home deliveries and what can be done about them, and the new technologies that could change the way goods are delivered.
Developing new propellants for satellites to replace toxic hydrazine would make launching and handling satellites safer but it also requires disrupting current systems, according to researchers.
Moving away from hydrazine would require disrupting existing systems.
Paleolithic diets weren’t only about meat but included a wide variety of plant foods, researchers say.
The more satellite launches we do, the bigger the risk of damage or debris, says Dimitra Stefoudi.