Oxygen-poor waters occupy large volumes of the intermediate-depth eastern tropical oceans. Oxygen-poor conditions have far-reaching impacts on ecosystems because important mobile microorganisms avoid or cannot survive in hypoxic zones. Climate models predict declines in oceanic dissolved oxygen produced by global warming. The researchers constructed a 50-year time series of dissolved-oxygen concentration for select tropical oceanic regions by augmenting a historical database with recent measurements.

Subglacial water can significantly affect the velocity of ice streams and outlet glaciers of ice sheets. Depending on the geometry and capacity of the subglacial hydrologic system, increased surface melting in Greenland over the coming decades may influence the ice sheet's mass balance. Furthermore, subglacial lakes in Antarctica can modulate ice velocities and act as nucleation points for new fast-flowing ice streams.

Atmospheric carbon dioxide levels greatly influence the Earth's climate. Evidence from ice cores and marine sediments suggests that over timescales beyond the glacial cycles, carbon fluxes are finely balanced and act to stabilize temperatures.

They cannot measure it in metres; they cannot explain what is happening, but they know they can no longer cope or adapt. My colleague Pradip Saha has been filming in Ghoramara, an island in the Sunderban delta, to understand why, in this zone suspended between land and water, people talk of nothing but subsidence. Savita's narration captures the mood.

Singer Rabbi today joined the Greenpeace activists for highlighting the urgency of creating a National Climate Action plan (NCAP) that focuses on preventing climate change. Rabbi said, "Everything we do can either hurt or save climate and our future depends on the choices we make. One cannot afford to watch climate change. We cannot live in our cocoon-gated colonies, we need to take a stand on climate change.' The Greenpeace activists have occupied prime real estate and set up a migrant colony 35-ft above Delhi-Noida toll bridge.

The British Antarctic Survey has released images showing a sizable part of the Wilkins ice shelf off the Antarctic peninsula "hanging by a thread'. It is holding on to a thin strip of ice attached to

Climate change is now officially a human rights issue. The un Human Rights Council on March 28 endorsed a resolution recognizing that global warming threatens the livelihoods and welfare of many of

SONIA KUNDU

After travelling in Himachal Pradesh to visit friends, I had an idea to export wild mushrooms to the uk. Not really crazy when you consider how much Europeans love their wild mushrooms and how abundantly they grow in Himachal.

  A sea of threats

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