Feature Article

Experimental releases of genetically modified (GM) insects are reportedly being evaluated in various countries, including Brazil, the Cayman Islands (United Kingdom), France, Guatemala, India, Malaysia, Mexico, Panama, Philippines, Singapore, Thailand, the United States of America, and Vietnam. GM mosquitoes (Aedes aegypti) have already been released for field trials into inhabited areas in the Cayman Islands (2009–?), Malaysia (2010–2011), and Brazil (2011–2012).

Insects are the pre-eminent form of metazoan life on land, with as many as 1018 individuals alive at any one instant and over three-quarters of a million species described. Although it is estimated that there are as many as 14,000 species that are blood feeders, only three to 400 species regularly attract our attention. Some of these are of immense importance to us, as vector-borne diseases still form a huge burden on both the human population and our domesticated animals.

Environment ministry clears hydro project rejected twice by its advisory committee. The union environment ministry has given in-principle clearance to a proposed hydro-project on the Alaknanda river, a tributary of the Ganga, in Uttarakhand. The 300 MW project had been rejected twice by the statutory body which recommends forest clearances, the forest advisory committee (FAC). FAC says the project lies in the buffer zone of Nanda Devi Biosphere Reserve (NDBR), a home to many endangered species.

About half the projects miss deadline. A number of power projects taken up under the first phase of the Jawaharlal Nehru National Solar Mission (JNNSM) are running behind schedule. A survey by Delhi non-profit Centre for Science and Environment shows many projects in the first batch of phase I, totalling 150 MW of Solar Photovoltaic (PV) power capacity, have missed their January 10, 2012 deadline. Thirty projects of 5 MW capacity each were auctioned in November 2010 and contracts had been signed on January 10, 2011 with a 12 month deadline.

An important source of uncertainty in anticipating the effects of climate change on agriculture is limited understanding of crop responses to extremely high temperatures. This uncertainty partly reflects the relative lack of observations of crop behaviour in farmers’ fields under extreme heat. We used nine years of satellite measurements of wheat growth in northern India to monitor rates of wheat senescence following exposure to temperatures greater than 34 °C.

One of the key tests to real empowerment of panchayats lies in the ability of local self-governing institutions to finance their own expenditures through internal generation of resources. Based on an analysis of three villages in Tamil Nadu, this paper argues that many gram panchayats are today in a position to substantially finance themselves and build a culture of self-sufficiency, independence and accountability to their citizens, reducing their dependence on devolutions from state governments.

Current paradigms generally assume that increased plant nitrogen (N) should enhance herbivore performance by relieving protein limitation, increasing herbivorous insect populations. We show, in contrast to this scenario, that host plant N enrichment and high-protein artificial diets decreased the size and viability of Oedaleus asiaticus, a dominant locust of north Asian grasslands. This locust preferred plants with low N content and artificial diets with low protein and high carbohydrate content.

Many tropical marine macroalgae are reported from all three ocean basins, though these very wide distributions may simply be an artifact resulting from inadequate taxonomy that fails to take into account cryptic diversity. Alternatively, pantropical distributions challenge the belief of limited intrinsic dispersal capacity of marine seaweeds and the effectiveness of the north-south oriented continents as dispersal barriers. We aimed to re-assess the distribution of two allegedly circumtropical brown algae, Dictyota ciliolata and D.

The economic pain of a flattening supply will trump the environment as a reason to curb the use of fossil fuels, say James Murray and David King.