A team of mathematical experts have said that 1729, which is also known as the Ramanujan-Hardy number, is linked to aspects of string theory and...
American space agency, NASA has said that greenery in urban areas can significantly help in reducing urban heat.
The agency said in a new study that plants along the roads, in the parks and in neighbourhoods can limit the heat effect in a significant way. The study found that the temperature in areas covered by concrete surfaces was 1.9 degrees Celsius higher than surrounding rural areas during summer months. During winter months, the difference in temperature was 1.5 degrees Celsius. The agency analysed observations from several satellites for the study.
Experts said that the rise of one degree Celsius can result in increased demand for air conditioning in the summer from 5 to 20 percent. Lahouari Bounoua, research scientist at NASA's Goddard Space Flight Centre in Greenbelt, Maryland, said that this is not linked to greenhouse gas emissions as it is in addition to the greenhouse gas effect and comes from land use only.
They also found that the urban heat effect happens mainly during the day when urban impervious surfaces absorb more solar radiation than the surrounding green areas. This results in a difference in temperature. The urban areas also do not have trees and plants to cool the air and reduce temperature.