Have you ever been away from the city, away from the bustling activities and clattering? If you have, then, without all the noises of the city to distract you, you might have noticed how loud a seemingly empty field is! Birds, frogs and insects all join in on this chorus. The animals making these calls need to invest time and energy into making them, and hence are made for specific reasons, where every call counts. Often, in the animal kingdom these vocalisations are used to attract potential mating partners.
You are here
India is gifted with lush green tropical forests and an annual monsoon that revives life in most parts of the country. Yet, the country is reeling from a persistent drought, while many of our forests are losing ground to rapid development. In the midst of this change, let us look at the state of environmental education in the country. In this story, Shaurya Rahul Naralanka, a lecturer of environmental science at Manipal University reminds us of the challenges and opportunities in teaching about nature.
What do sword billed humming birds, fig wasps and acacia ants have in common? It’s the phenomenon of co-evolution, where these organisms are dependent on other organisms for survival and they reciprocally affect the other’s evolution.
The Sun gives the light and heat that sustains all life on earth. But many mysteries still surround the star and new discoveries are being made every day. On March 6th, 2012 one such event was observed with our telescopes - a standing wave was observed in one of the coronal structures on the solar surface. Find out why the event was important to our understanding of the Sun in this article.
Medical advancements and modern scientific techniques strive to solve challenges posed to human communities, especially healthcare threats. Viruses are one of the major threats and tend to make themselves resistant to drugs and evolve new mechanisms for survival by making subtle changes in their DNA called as mutations. Today among the many viruses, Dengue virus has been a serious problem causing mortality in widespread areas. Although treatments and drugs have been developed, it is essential to make sure that we’re ready to face worse cases in future.
The human body has a mechanism to maintain a certain balanced pH (potential of Hydrogen), or the degree of acidity or alkalinity in the body. Generally, this is found to be around 7.35 (on a scale of 0-14), and it varies throughout the day, depending on one’s diet and activities. The pH levels in tissues are far more sensitive.
Human beings, in their brief history, started off as hunter–gatherers hunting animals and birds, or collecting fruits and nuts to eat. They then invented agriculture, a revolutionary transformation from ‘collecting’ food to ‘growing’ it. Suddenly, acquiring food, which was one of the most important task of the early man, became a breeze. Today, in the era of technology, food production has reached new levels and so have our ways of handling the produce.
The Earth’s interior is still a mystery to us. While we have sent missions to probe the outer reaches of our Solar system, the deepest boreholes on Earth go down to only a few kilometres. The only way to learn what’s going on deep inside our planet, in the core and the mantle, is by indirect methods.