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Johnson & Johnson has decided to delay the rollout of its vaccine in Europe after authorities in the US raised fears over a possible link to blood clots. We speak to Krishna Udayakumar, a professor of medicine and director of the Duke Global Health Innovation Center in North Carolina.
Japan says it will run out of storage and the water will be treated and diluted to ensure radiation levels are below those set for drinking water. However, the local fishing industry has strongly opposed the move, as have China and South Korea. Oceanographer Dr Simon Boxall discusses the potential environmental impact of these plans.
Also in the programme, Twitter has announced plans to open its Africa headquarters in Ghana. Software developer Regina Honu tells us what makes the country an attractive destination.
Plus, as drone racing is becoming increasingly popular, we speak to Nicholas Horbaczewski, founder of the professional Drone Racing League.

(Picture: Johnson & Johnson vaccine / Credit: Getty Images)