A tourism boom in the Yucatán Peninsula is threatening the delicately balanced ecosystems of the Laguna Bacalar. We must regulate tourism and pollution to better protect the ancient organisms that have thrived in its waters, argues HARRY SHEPHERD

Similarities in the gestures used by children and gorillas reveal an evolutionary history of communication. MARIANNE BROOKER reports

The campaign against fracking began with concerns about the local environment, and the impact on communities. It then took in the global issues of climate change and energy. Now local people are growing ever more concerned about democracy and state power, argues NATALIE BENNETT

Global fish consumption has nearly doubled in the last 50 years. But the industrialisation of the fishing industry is taking a heavy toll on small-scale fishing communities. ELYSE MILLS writes about the rise of a global ‘fisheries justice’ movement

The BBC needs to better educate and inform its audience about the severities of climate change. Children's author SUE HAMPTON sets out five ways in which it can clean up its act

Biosphere 2 was a radical experiment that advanced the science of biospherics, pioneered eco-technologies and inspired with its vision of how the technosphere and biosphere can be brought into harmony, argues crew member MARK NELSON