What actually makes avocados bad for the environment?

The soaring demand for avocados in Europe and North America has led to a trebling of global production in just over 20 years. However, this popular fruit is increasingly controversial because of the environmental impacts ...

Green shoots: Rooftop farming takes off in Singapore

On the rooftop of a Singapore shopping mall, a sprawling patch of eggplants, rosemary, bananas and papayas stand in colourful contrast to the grey skyscrapers of the city-state's business district.

Monkey economy works

(PhysOrg.com) -- A monkey that has acquired the sole power to hand out apples is generously rewarded with grooming sessions by the other monkeys in its group. But as soon as another monkey can hand out apples as well, the ...

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