Feature Article

Atlantic salmon populations are reported to be declining throughout its range, raising major management concerns. Variation in adult fish abundance may be due to variation in survival, growth, and timing of life history decisions. Given the complex life history, utilizing highly divergent habitats, the reasons for declines may be multiple and difficult to disentangle. Using recreational angling

The rising affluence of the 1 per cent may not only mean there is less for everyone else. What does inequality mean for your health?

Aquanaut Sylvia Earle, co-leader of the final mission to the world's only undersea lab, says the oceans need protecting more than ever – don't pull funding.

Extreme weather events will become more common as the climate warms, so conservationists must devise ways to protect ecosystems.

Polar bears have been around for millions of years longer than previously thought – and might be resilient to current climate change and habitat loss.

As US crops wither in drought, researchers are turning to symbiotic fungi to help crops survive extreme conditions without resorting to genetic engineering

It created a media feeding frenzy and dragged climate scientists' reputations through the mud, but nobody will be prosecuted for the "climategate" email hack. Thousands of emails were stolen from the servers of the Climatic Research Unit (CRU) at the University of East Anglia in November 2009 and posted on a Russian email server. Climate sceptics seized on them to claim that scientists had conspired to withhold or alter data, unfairly manipulated the peer-review process and smeared their critics.

While unplanned colonies retain a negative image for most city planners, pragmatic reasons favour their regularisation. A large number of Delhi's residents live in such unauthorised colonies, most of which are now being regularised. But just how many people, and what changes for them through regularisation? This process does not come without preconditions, spelled out through an emphasis on self-enumeration as well as the mandatory formation of resident welfare associations during the application for legal status.

The bazaar or intermediate classes have remained outside the predominant research imagination on urban change. Delhi's wholesale and retail traders, the primary subjects of this paper, are a subset of this bazaar world. This paper uses a case study of the Supreme court ordered sealing drives of 2006-07 to investigate how these traders were threatened by eviction dynamics earlier experienced by slum-dwellers and small-scale industrialists.