In Senegal, mathematicians at the African Institute for Mathematical Sciences have developed an app aimed at helping fishermen pursue their livelihoods sustainably.
Moving to a "blue" economy is crucial for the sustainability in our world's oceans, say experts at the 5th World Ocean Summit happening in Mexico this week. But what is "blue economy" actually about?
Campaigners say EU politicians under pressure from industry routinely agree to unsustainable fishing quotas, against scientific advice. But fishermen warn big cuts to fish quotas will put thousands of jobs at risk.
The area around Kenya's Lake Naivasha is sometimes known as "the flower bed of Africa." But the industry — essential to the country's economy — is heavily polluting. Some companies are trying to be greener.
The popularity of the Mexican island of Cozumel as a cruise destination is great for the economy — but not necessarily for nature. The country is now trying to protect its blue waters and fragile coral reefs.
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