Feature Article

Shows cold response to recommendations on curbing illegal mining of iron, manganese

THE UNION Ministry of Mines has responded coldly to the recommendations of the M B Shah Commission on curbing illegal mining of iron and manganese ores. In its response, filed in December last year, the ministry also seemed at loggerheads with the state mining departments over their suggestion to ban export of the minerals to check illegal mining. The commission was set up by the Centre in November 2010 to look into the growing illegal mining of the minerals and suggest remedial measures.

Centre continues to allocate coal blocks despite calls for competitive bidding

The arbuscular mycorrhizal fungi (AMF) are a key, integral component of the stability, sustainability and functioning of ecosystems. In this study, we characterised the AMF biodiversity in a native vegetation soil and in a soil cultivated with Jatropha curcas or Ricinus communis, in a tropical system in Guantanamo (Cuba), in order to verify if a change of land use to biofuel plant production had any effect on the AMF communities.

According to the ‘Faint Young Sun’ paradox, during the late Archaean eon a Sun approximately 20% dimmer warmed the early Earth such that it had liquid water and a clement climate. Explanations for this phenomenon have invoked a denser atmosphere that provided warmth by nitrogen pressure broadening or enhanced greenhouse gas concentrations. Such solutions are allowed by geochemical studies and numerical investigations that place approximate concentration limits on Archaean atmospheric gases, including methane, carbon dioxide and oxygen.

Updated risk assessment warns Japan to prepare for much larger earthquakes and waves.

Donald Boesch argues that the lessons learned from the Deepwater Horizon oil spill should be enshrined in legislation before they fade from memory.

The US government must not wriggle out of paying compensation to the victims of horrific experiments in Guatemala in the 1940s. (Editorial)

Exposure to environmental contaminants may result in reduced reproductive success and long-lasting population declines in vertebrates. Emerging data from laboratory studies on model species suggest that certain life-stages, such as development, should be of special concern. However, detailed investigations of long-term consequences of developmental exposure to environmental chemicals on breeding performance are currently lacking in wild populations of long-lived vertebrates.