Three decades after the Bhopal gas lead killed a few thousand people overnight, the struggle continues for its survivors. A number of issues concerning the survivors of the disaster, termed the biggest industrial accident in history, seemed close to resolution this year, but none was resolved.

Underscoring yet another reason why an ambitious climate deal must come out of upcoming COP21 talks in Paris, a new United Nations report warns of the "high price" of extreme weather disasters that are spurred in large part by a warming globe and rising sea levels.

An average of 335 weather-related disasters annually between 2005 and August this year, up 14 percent from 1995-2004 and almost twice as many as in the years from 1985 to 1994.

As Delhi and other parts of the country battle the surge in dengue cases, here is a look at how vector-borne diseases have been spreading their tentacles over the years.

About one-fifth of the world

Technology has altered the trade of wildlife products including ivory, rhino horn, pangolin scales, exotic birds and live apes. The Internet has boosted trafficking by lowering barriers of entry into criminal markets, facilitating communication and exchange of information, as well as reconfiguring relations among supplies, intermediaries and buyers. However, technology can also offer support to national environment, wildlife and law enforcement agencies.

The Internal Displacement Monitoring Centre (IDMC) estimates that disasters forced more than 19.3 million people in 100 countries to flee their homes in 2014.

India ranks third among top 10 countries in the LEED Green Building rankings. These rankings highlight countries outside of the US that are making significant strides in sustainable building design, construction and transformation.

More than 70 per cent respondents in Uganda, Ghana, Burkina Faso, Peru, Brazil, the Philippines and India said they were more concerned about climate change than economic instability, ISIS and Iran's nuclear programmes.

The growing danger of bird flu.

According to a study published in the journal Nature, 41 percent of all amphibians on the planet now face extinction, while 26 percent of mammal species and 13 percent of birds are similarly threatened.