Definition of evidence. 1a : an outward sign : indicationb : something that furnishes proof : testimony; specifically : something legally submitted to a tribunal to ascertain the truth of a matter.
Fifty years ago, James Watson and Francis Crick announced to patrons in a Cambridge pub that they had just discovered the secret of life. Their discovery was that the DNA double helix explained how cells divide and develop.ifty years ago, James Watson and Francis Crick announced to patrons in a Cambridge pub that they had just discovered the secret of life. Their discovery was that the DNA double helix explained how cells divide and develop.
Courtesy Science Nation/National Science Foundation. How did life on Earth begin? Itâs one of the biggest unanswered questions in science. Nicholas Hud and the Center for Chemical Evolution are breaking apart RNA and DNA to determine how the chains of chemicals that make life came together. DNA is the blueprint for building life, but RNA carries out the DNAâs instructions.