Read about how robots could save the Great Barrier Reef, why Americans work so much, and what art projects veterans are making to help them recover from post-traumatic stress disorder.
It's all in the timing. Biologists haven't been able to breed embryos of the rare, pillar coral in the lab because it's been tough to catch the creatures in the act.
One Australian report estimated the reef had lost more than half its coral since 1985. The government is considering a new 35-year plan to rescue the reef, but some say it falls short.