These changes typically occur so slowly that they are barely detectable over the span of a human life, yet even at this instant, the Earth's surface is moving and changing.
As these changes have occurred, organisms have evolved, and remnants of some have been preserved as fossils.
A barrage of tests proves that the marijuana possessed potent psychoactive properties and casts doubt on the theory that the ancients only grew the plant for hemp in order to make clothing, rope, and other objects. Lead author Ethan Russo told Discovery News that the marijuana "is quite similar" to what's grown today.
(Source) In 2007, a 5,000-year-old piece of chewing gum, the oldest ever discovered, was found by a British archaeology student in Finland.
The exhumation and reburial of Richard III began with the discovery of the king's remains within the site of the former Greyfriars Friary Church in Leicester, England, in September 2012.
Following extensive anthropological and genetic testing, the remains of Richard III, the last English king killed in battle, were ultimately reinterred at Leicester Cathedral on 26 March 2015.
They found “transparent cell-like microstructures with dentritic [branching, just the shape expected for osteocytes] processes, some containing internal contents,” from both dinos.
They also used antibodies to detect the globular proteins actin and tubulin, used to make filaments and tubes in Cells are usually completely degraded soon after the death of the organism, so how could ‘bone cells’ and the molecules that comprise them persist in Mesozoic [evolutionary dino-age] bone?
The presence of original molecular components is not predicted for fossils older than a million years, and the discovery of collagen in this well-preserved dinosaur supports the use of actualistic conditions to formulate molecular degradation rates and models, rather than relying on theoretical or experimental extrapolations derived from conditions that do not occur in nature.
A fossil can be studied to determine what kind of organism it represents, how the organism lived, and how it was preserved.
However, by itself a fossil has little meaning unless it is placed within some context.
On the first day a human skeleton belonging to a man in his thirties was uncovered showing signs of severe injuries.
The skeleton, which had several unusual physical features, most notably a severe curvature of the back, was exhumed to allow scientific analysis.