Research that argues dams have no direct effect on the migration of juvenile salmon is roiling waters in the US Pacific Northwest. The study, published in PLoS Biology, uses a new way to tag fish to compare the heavily dammed Columbia River system
with the free-flowing Fraser River to the north in British Columbia, Canada.
Fishermen's aims of increasing their catch seem at odds with preserving fish stocks by limiting catch. A study of more than 11,000 fisheries shows that 'individual tradable quotas' can reconcile these goals.
Fishermen's aims of increasing their catch seem at odds with preserving fish stocks by limiting catch. A study of more than 11,000 fisheries shows that 'individual tradable quotas' can reconcile these goals.
In an effort to avoid a food crisis as the population grows, China is putting its weight behind genetically modified strains of the country's staple food crop. Jane Qiu explores the reasons for the unprecedented push.
Europe's ambitious climate plan was approved by the European Parliament's environment committee. But a group of eastern European countries, led by Poland, threaten to block reforms to the emissions-trading system, saying that these would harm their economies.
Why does a developing nation have such an ambitious space programme? Subhadra Menon traces its foundations back to the work of one visionary physicist 60 years ago.
