大象传媒

Although vaccines will go a long way to reducing the number of cases of Covid, there鈥檚 still a need for other approaches. One of these could be an engineered biomolecule, designed by virologists Anne Moscona and Matteo Porotto, that blocks SARS-CoV-2 precisely at the moment it tries to enter cells in the nose and upper airways. Roland Pease talks to Anne Moscona about this 鈥渕olecular mask鈥�.

We鈥檙e already beginning to see really encouraging analyses showing that Covid vaccines are performing as well in the real world as was promised by last year鈥檚 trials. Shane Crotty of the La Jolla Institute for Immunology discusses progress so far and the question of one dose or two with Roland.

Lives can be saved if there鈥檚 an early warning system for earthquakes and tsunamis. Seismologist Zhongwen Zhan at CalTech has been experimenting with a newly installed 10,000 km cable laid along the Pacific coasts of north and south America by Google, all the way from Los Angeles to Santiago. What he was looking for were subtle changes in a property of light that鈥檚 important to IT engineers, and can detect subsea earthquakes.

We are still sending too much waste to landfill sites. At the Commonwealth Science Conference this week Veena Sahajwalla of the University of New South Wales explained how she is creating small scale factories that can use discarded objects such as ceramics and textiles to make new products.

(Image: Getty Images)

Presenter: Roland Pease
Producer: Deborah Cohen