Latest Lawrence David Stories
Life on Earth began to flourish about 3 billion years ago, possibly when primitive forms developed efficient ways to harness energy from the Sun's light, according to a new study published in the journal Nature on Sunday. Scientists at the Massachusetts Institute of Technology (MIT) built a "genomic fossil" -- a mathematical model that took 1,000 key genes that exist today -- and calculated how they evolved from the very distant past. The collective genome of all life expanded massively...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.