Charles Darwin described evolution as "descent with modification." Genetic information in the form of DNA sequences is copied and passed down from one generation to the next. But this process must also be somewhat flexible, ...
Evolution
Mar 4, 2024
0
342
One of the biggest crises in Earth history was marked by a revolution in the shellfish—brachiopods, sometimes called "lamp shells" were replaced everywhere ecologically by the bivalves, such as oysters and clams. This happened ...
Evolution
Sep 14, 2023
0
34
Scientists at Newcastle University have uncovered a source of oxygen that may have influenced the evolution of life before the advent of photosynthesis.
Earth Sciences
Aug 8, 2022
7
118
A study using the thermal history and biosignatures of the upper few kilometers of some of the oldest rocks on Earth place constraints on the evolutionary history of microbes in the deep biosphere. A new study, published ...
Earth Sciences
Nov 1, 2021
3
1597
The history of life on Earth has often been likened to a four-billion-year-old torch relay. One flame, lit at the beginning of the chain, continues to pass on life in the same form all the way down. But what if life is better ...
Evolution
Aug 16, 2021
0
834
For most of Earth's history, life was limited to the microscopic realm, with bacteria occupying nearly every possible niche. Life is generally thought to have evolved in some of the most extreme environments, like hydrothermal ...
Earth Sciences
Jan 28, 2021
0
608
Photosynthesis, the process by which plants and other organisms convert sunlight into chemical energy, has been a major player during the evolution of life and our planet's atmosphere. Although most of the ins and outs of ...
Earth Sciences
Jan 12, 2021
0
1633
A nearly 40-million-year-old skeleton belonging to what is popularly called a sabre-toothed tiger has sold for $84,350, a year after its discovery on a US ranch.
Archaeology
Dec 9, 2020
0
48
Two of Charles Darwin's notebooks containing his pioneering ideas on evolution and his famous "Tree of Life" sketch are missing, believed stolen, the Cambridge University Library said on Tuesday.
Evolution
Nov 24, 2020
1
2878
Earth may have been far more oxygen-rich early in its history than previously thought, setting the stage for the evolution of complex life, according to new research by scientists at the University of Alberta and the University ...
Earth Sciences
May 12, 2020
2
3034
