The remarkable life of Prince Philip
Did he see more change than any of us will? Prince Philip died on Friday aged 99. The Queen’s husband had an incredible life and lived through some of the most important events in history.
Moon mission a new era for space travel
Does space travel bring us hope? Experts working on a historical lunar mission say it helps us stay optimistic during hard times – but some people think we should stick to earthly problems.
The robot dolphins that could transform zoos
Are robot animals a good idea? A company in the USA has created electronic dolphins that can swim and move like the real thing. Some think they should replace wild creatures in zoos.