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Charles Robert Darwin was the father of evolution. The English naturalist, biologist and geologist may have devoted his lifetime to science, but he was also a romantic, a doting father and possessed a gentle disposition.

Darwin's journey to being history's favorite  biologist, however, had strange twists and turns. He tried to study medicine, but gave it up to pursue theology at Christ College. Cambridge.

But the study of the divine could not contain his ever inquisitive mind. While in college, he devoured journals and books in botany and geology in his free time. He loved gardening and had a special interest in collecting beetles. He learnt physics and geometry with great enthusiasm and noted down his observations diligently.

Darwin took great delight in William Wordsworth and ST Coleridge's poetry, claiming to have read Wordsworth's long poem Excursion twice. His favourite work of literature, however, was Paradise Lost by John Milton, which he carried along with him on his first voyage to South America in 1831 as a scientist in training to assist his mentor, botanist, geologist and priest John Henslow.

He nurtured a habit of writing, too. A meticulous diarist, he kept recording daily events, both scientific and personal. For six years of his life - between 40 and 46 years - he even made notes of his illnesses. He wrote about battling insomnia, restlessness, stomach pain, dizziness, rashes and melancholy among other issues.

He married the love of his life, Emma and had ten children with her. "Children are one of life's greatest joys," he wrote to a friend. The cover pages of the original manuscript draft of his iconic work, On The Origin of Species by Means of Natural Selection, contain a number of doodles by his children. While many are caricatures of Darwin himself, one depicts a vegetable war - turnips, carrots, eggplant and more engaged in a fierce battle, while another shows a bright green frog, wearing pink shoes on an outing, carrying a blue umbrella. These drawings have been digitized by the American Museum of Natural History.

It took Darwin 20 years to publish his momentous work, On The Origin of Species by Means of Natural Selection. On November 24, 1859, it appeared in bookstores in England. Priced at 15 shillings a copy, all the 1,250 copies were sold out on that very day. The book is considered to be the foundation of evolutionary biology, a revolutionary work that changed the course of science.

What truly kept Darwin going was his unrelenting passion for the natural world: He took in everything with childlike interest. On his first journey to South America, to study the natural world, he was extremely sea-sick. But he religiously collected birds, plants, skeletons, lizards, fossils and small animals, converting the ship into a museum of specimens.

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Dr.Bhim Rao Ambedkar declared no. 1 scholar in world by colombia University. He was a world-class lawyer, social reformer and number one world-class scholar as per the Ministry of Social Justice, Government of India. Ambedkar graduated from Elphinstone College, University of Bombay, and studied economics at Columbia University and the London School of Economics, receiving doctorates in 1927 and 1923 respectively and was among a handful of Indian students to have done so at either institution in the 1920s. Dr. Babasaheb Ambedkar is remembered as one of the most respected and revered leaders India has ever produced. To the young and old alike, he is an icon of equality, fraternity and social justice. He advocated politics with values, democracy with fraternity, and religion with social responsibility.

Dr Bhimrao Ramji Ambedkar was born on 14 April 1891 at Mhow, in the Central Province (presently Madhya Pradesh). He was the fourteenth and the last child Ramji Maloji Sakpal and Bhimabai Sakpal. Bhimrao was a brilliant student who earned two doctorates in Economics from the prestigious Columbia University and the London School of Economics. He was a well-known statesman, ambitious leader, erudite economist, expert jurist, dynamic journalist, brilliant scholar, prolific writer and social reformer, all capsuled into one. As the Chairman of the Drafting Committee of the Indian Constitution, he was its principal architect. He championed the cause of the Dalits, women, the poor and other socially backward people of India. He was the first law minister of independent India. After a prolonged illness, he died in the year 1956, a few months after converting to Buddhism. The country honoured him with the highest civilian award, the Bharat Ratna, posthumously in 1990.

Coming from a poor and backward class who were treated as untouchables, the Ambedkar family was exposed to the sheer brutality of the caste system and its atrocities in life. The bitter experiences in life gave him enough fire to burn with the desire for social justice and equality and shape him as a social reformer. He campaigned against social discrimination towards the untouchables of his time. He condemned child marriage and the mistreatment of women in society. He vociferously crusaded against the caste system in India. He fought for the legal protection of the Dalits, and for equality of opportunities through the reservation system. He inspired millions and represented the voice W for self-respect, intolerance of injustice, and struggle against social and economic oppressions.

As a political philosopher and architect of the Indian Constitution, Dr Ambedkar had a prophetic vision of how political parties, down the decades, would use caste and creed to influence voters. Perhaps the India of today is what Dr Ambedkar had feared seven decades ago.

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Charles Darwin was an English scientist who proposed that evolution happened through ‘natural selection’. According to Darwin, the organisms that lived on are those which had the best traits to survive their environment, and passed on those traits to following generations.

Charles Robert Darwin, (12 February 1809 – 19 April 1882) was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution.

The Theory of Evolution by natural selection was first formulated in Charles Darwin's book "On the Origin of Species" published in 1859. In his book, Darwin describes how organisms evolve over generations through the inheritance of physical or behavioral traits, as National Geographic explains. The theory starts with the premise that within a population, there is variation in traits, such as beak shape in one of the Galapagos finches Darwin studied.

According to the theory, individuals with traits that enable them to adapt to their environments will help them survive and have more offspring, which will inherit those traits. Individuals with less adaptive traits will less frequently survive to pass them on. Over time, the traits that enable species to survive and reproduce will become more frequent in the population and the population will change, or evolve, according to BioMed Central. Through natural selection, Darwin suggested, genetically diverse species could arise from a common ancestor.

Credit: Live Science

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