This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

Environmental stress in evolution can be reframed as a powerful engine of innovation, not simply a barrier to survival.

My team's new research, published in Nature Communications, suggests that these drastic oxygen fluctuations played a crucial role in this dramatic period ... out in the Cambrian. Animals evolved ...

In a quiet part of what is now South Australia, more than half a billion years ago, life was locked in battle. The ocean ...

For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

For over a century, the Cambrian arthropod Helmetia expansa remained a mystery. Discovered by paleontologist Charles Doolittle Walcott in 1918, it was ...

Horatio Alger is the largest needs-based scholarship organization in the United States. This year, it will award $17.4 million for higher education, military or technical training to disadvantaged U.S ...

“NATURE vibrates with rhythms, climatic and dystrophic, those finding stratigraphic expression ranging In period ... of the Cambrian is far from certain, while the age of TIME SCALE IN MILLIONS ...

ders of plants and animals—changes ... For instance, what a vast period of time is indicated by the upheaval and subsequent denudation of the pre-Cambrian (or Archrean) rocks before those ...

The first complex animals to have ever existed arose during ... Furthermore, they can give us an insight into Earth’s geology during that time. The organisms that survived to start the Cambrian ...