7,844 results
7,844 results for: Geology
- Planetary Science
Organic molecules in an ancient Mars meteorite formed via geology, not alien life
Analysis of an ancient Martian meteorite reveals that organic molecules within it were formed by geologic processes rather than alien life.
- Earth
Indigenous people may have created the Amazon’s ‘dark earth’ on purpose
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient dark soils found in the region.
- Environment
Heat waves in U.S. rivers are on the rise. Here’s why that’s a problem
In recent years, heat waves in U.S. rivers have gotten more frequent, causing trouble for fish, plants and water quality.
- Space
How balloons could one day detect quakes on Venus
A new study opens the door for future balloon-based missions to study the geology of other worlds.
- Environment
Earth’s oldest known wildfires raged 430 million years ago
430-million-year-old fossilized charcoal suggests atmospheric oxygen levels of at least 16 percent, the amount needed for fire to take hold and spread.
- Environment
Mangrove forests expand and contract with a lunar cycle
The carbon-sequestering trees grow in a roughly 18-year cycle according to tides influenced by the moon’s orbit, a study in Australia finds.
- Paleontology
Dinosaur ‘mummies’ may not be rare flukes after all
Bite marks on a fossilized dinosaur upend the idea that exquisite skin preservation must result from a carcass's immediate smothering under sediment.
- Planetary Science
A new look at the ‘mineral kingdom’ may transform how we search for life
A new census of Earth’s crystal past hints that life may have begun earlier than expected, and could be a tool to look for water and life elsewhere.
- Animals
Extreme climate shifts long ago may have helped drive reptile evolution
The end-Permian extinction left reptiles plenty of open ecological niches. But rapid climate change may be what kick-started the animals’ dominance.
- Paleontology
How mammals took over the world
In the book The Rise and Reign of the Mammals, paleontologist Steve Brusatte tracks the evolutionary innovations that made mammals so successful.
- Earth
Not one, but two asteroids might have slain the dinosaurs
A craterlike structure found off West Africa’s coast might have been formed by an asteroid impact around the same time the dinosaurs went extinct.
- Planetary Science
Robin Wordsworth re-creates the atmosphere of ancient Mars
Robin Wordsworth studies the climates of Mars and other alien worlds to find out whether they could support life.
