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James Hanna and Jonathan Hoag have been picking up rocks at Penn Dixie Fossil Park and Nature Reserve in Hamburg since they were kids. And now, in their 20s, they

Most modern plants grow leaves in a pattern that follows the Fibonacci sequence, but a reconstruction of a 400-million-year-old plant reveals that its leaves grew much more chaotically

Fossil fuel, any of a class of hydrocarbon-containing materials of biological origin occurring within Earth’s crust that can be used as a source of energy. Fossil fuels include coal, petroleum, natural gas, oil shales, bitumens, tar sands, and heavy oils. All contain carbon and were formed as a result of geologic processes acting on the remains of organic matter produced by photosynthesis, a process that began in the Archean Eon (4.0 billion to 2.5 billion years ago). Most carbonaceous material occurring before the Devonian Period (419.2 million to 358.9 million years ago) was derived from ...

Historical records only go back a few thousand years, and are inadequate to treat most geological processes. To understand the timing of geological processes we need to look at the geological rock record. This includes erosion, mountain building and other geological events. Over hundreds to thousands of millions of years, continents, oceans and mountain ranges…

Mass extinction of ancient larger animals led to the dominance of tiny fish according to researchers