Science

 Alternatives to pesticides are available and include methods of cultivation, use of biological pest controls (such as pheromones and microbial pesticides), genetic engineering and methods of interfering with insect breeding.  Application of composted yard waste has also been used as a way of controlling pests. These methods are becoming increasingly popular and are … Read more

The survival of plants is dependent on a number of factors which include water, minerals, gases, and nutrients they receive. The movement of gas, water, and nutrients in plants are carried out in components. They take in carbon dioxide from the air through the stomata present in their leaves and they absorb compounds of nitrogen, … Read more

When rubbers bands are twisted and untwisted, it produces a cooling effect. This is called the “elastocaloric” effect, and researchers have suggested that it can be used in a very relevant context today. The elastocaloric effect, if harnessed, may be able to do away with the need of fluid refrigerants used in fridges and air-conditioners. … Read more

The nitrogen cycle is a complex biogeochemical cycle in which nitrogen is converted from its inert atmospheric molecular form (N2) into a form that is useful in biological processes. The Nitrogen cycle contains various stages: Nitrogen fixation: Inert form of Nitrogen is fixed and converted into organic form in a process called nitrogen fixation. Most … Read more

. NATGRID plays following important roles in India’s security: National Intelligence Grid or NATGRID is an intelligence grid connecting the databases of 21 core security agencies to collect comprehensive patterns of intelligence. These databases include railway and air travel, income tax, bank account details, credit card transactions, etc. Despite prone to such terror attacks, we … Read more

Missile defence is a system, weapon or technology involved in detection, tracking, interception and tracking of attacking missiles. The United States, Russia, China, India, Israel and France have all developed such air defence systems.Surface-to-air missile is a missile designed to destroy aircraft or other missiles. Attempts to develop them started during World War II and … Read more

There are several ways of removing particulate matter; the most widelyused of which is the electrostatic precipitator, which can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant. It has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons. These electrons … Read more

A fuel cell is a device which produces electric energy, through a chemical reaction. Fuel cells use positively charged ion(Hydrogen) and an oxidising agent (oxygen).There are many types of fuel cells, but they all consist of a cathode,an anode, and an electrolyte that allows positively charged( hydrogen) ions to move between the two sides of … Read more

Radioactivity is a physical process. As the name implies it is the act of emitting radiation spontaneously. In simple terms if atomic nucleus is unstable and want to loose some energy, it will release energy in the form of radiations. There are several types of particles or waves that may shoot out of a radioactive … Read more

With the increase in Urbanisation and modernisation there is an increase in pollution, unhealthy lifestyle, environmental toxins which in turn increases the risk of disease.  The major health problems associated with modern lifestyle are as follows: Rise in pollution due to unplanned Pollution related problems like Asthama, Lung related disease etc. are on rise. Life … Read more