Sedimentation

Hussain Sagar goes to toxic waste

For the past five years Hyderabad has been trying to clean the Hussain Sagar Lake, separating the twin cities of Hyderabad and Secunderabad in Andhra Pradesh. The efforts suffered yet another blow on June 20 when the Andhra Pradesh Pollution Control Board (APPCB) denied permission to dredge the mouths of four nalas releasing waste water into the lake and to dispose it of at a nearby quarry.

Publication Date:

30/08/2010

Author(s): K Naresh Kumar

Source: Down to Earth

Vol:

0

Issue:

0

pp:

0

Tags:

Andhra Pradesh, Dredging, Heavy Metals, Hyderabad (D), Lake Pollution, Lead, Mercury, Sedimentation, State Pollution Control Board (SPCB), Toxic Wastes, Toxins, Waste Disposal, Water Pollution

Science And Technology

Sinks below and stays there

Algal neurotoxin enters deep-sea food web, kills whales while crab cakes and marinated clams make for delightful cuisine, shellfish poisoning is a health risk. Shellfish feed on algae that produce harmful toxins. Domoic acid (DA) is one such neurotoxin, dangerously high levels of which are produced during algal blooms of the species, Pseudo-nitzschia. The toxin was earlier believed to

Publication Date:

14/05/2009

Author(s): Susmita Dey

Source: Down to Earth

Tags:

Marine Pollution, Marine Research, Marine Life, Sedimentation, Science And Technology, United States Of America (US), Toxins

Himalayan blunder

Dam makers rake in the moolah irrespective of the amount of electricity projects generate TWO issues back this magazine had done a detailed analysis of the wind energy sector in the country. We told you how wind turbines were being installed in increasing numbers, but performed at a dismal level and generated electricity far lesser than their potential. The policy gave incentive only to

Publication Date:

14/09/2008

Source: Down to Earth

Tags:

Himalaya, Dams, Sedimentation, Hydroelectricity, Energy, Hydrology, India

Environment