How to provide for indigenous and other peoples with a rare animal as a food source and sustain their diet? (As well as make sure we don’t have another extinction on our hands). A scientific approach is required in the Caribbean, where little seems to be going well in some countries, while others conserve their fauna and flora to make large profits from tourism.

Air pollution is rarely linked to water pollution, but the strong links will soon be obvious, just as the surface air movement is influenced by the ocean currents and the temperatures of both. While scientific models can tell us what is going to happen as the earth warms, climate change will also be influenced by small so far neglected fluctuations in chemistry such as these pH changes in our oceans, affecting billions of creatures, and of course, us.

This little sea-bream is able to conveniently dispose of and control jellyfish populations, just as the big turtles can. The research involved has a lot of relevance to turtle conservation as well as the massive jellyfish blooms reported in Japan and other parts of the world.

Are you interested in ''how cities can contribute to the advancement of sustainable development and address issues including water, energy and waste?'' Think you could write 500-600 words on the topic?

Masdar is launching its annual global sustainability debate at ADSW again. The blogging contest will appeal to a very wide range of people, focussing on cities and sustainable development.

The deodorant story progresses with a natural solution that has no aluminium or other ''contaminant'' to cause you any allergies or discomfort. Rubbing this in your skin could solve any BO problems!