Coral crisis for Great Barrier Reef
Can we save the reef before it is too late? The Great Barrier Reef is dying: experts have found that over half of its corals have been lost. To save the rest, they say, we have to act fast.
Moon mission a new era for space travel
Does space travel bring us hope? Experts working on an 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.