In northeast Brazil, the capuchins have a food source limited to hard shelled fruits and seeds. As a survival adaptation they learned how to make use of the available sources by the use of stone tools. Interestingly enough, they don’t just use any old rock that they can find. The capuchins make sure that their “hammers” are the perfect size to swing with but are also made out of a hard enough material- such as quartzite. Sandstone is usually used as an anvil. The perfect tools don’t just go to waste after they are used, the capuchins make sure to stash these tools under trees so that they can be reused later on. • Learned – The culture of non-human primate tool use is highly based on learning. It is not a biological trait, but it is something…
him. But it took him less than one day to spoil everything. Rahul Yadav, CEO of housing.com took years to build his company and establish trust in the investors and prospective clients. After all this hard work, that would have given him fruit for the rest of his life, he decided to behave irrationally. He had a fight with the investors and resigned from the firm. This not only left the firm in bad light but also tarnished his image for his future career. Two fishes and a frog Once upon a…