All Stories by Nikk Ogasa
- Earth
Geoscientists found the most dangerous part of a famous West Coast fault
Seismic data reveal that the Cascadia megathrust consists of at least four segments, the most dangerous of which may lurk offshore of Washington.
- Environment
A new approach to fighting wildfires combines local knowledge and AI
Land managers in the western United States are using potential operational delineations, or PODS, to prepare for — and take advantage of — wildfires.
- Climate
Three reasons why the ocean’s record-breaking hot streak is devastating
Ocean warming enhances hurricane activity, bleaches coral reefs and melts Antarctic sea ice. That warming has been off the charts for the past year.
- Health & Medicine
A new U.S. tool maps where heat will be dangerous for your health
The daily updated HeatRisk map uses color coding to show where the health threat from heat is highest and offers tips on how to stay safe.
- Planetary Science
Our picture of habitability on Europa, a top contender for hosting life, is changing
The moon of Jupiter is considered one of the most promising places to look for life, but its subsurface ocean may be less habitable than once thought.
- Planetary Science
Jupiter’s moon Io may have been volcanically active ever since it was born
An analysis of the moon’s atmospheric composition suggests that it has been spewing sulfur for roughly 4.6 billion years.
- Planetary Science
Titan’s dark dunes could be made from comets
Saturn’s largest moon could have gotten its sands from an ancient reshuffling of the solar system. If true, that would solve a long-standing mystery.
- Agriculture
Mixing up root microbes can boost tea’s flavor
Inoculating tea plant roots with nitrogen-metabolizing bacteria enhances synthesis of theanine, an amino acid that gives tea its savoriness.
- Earth
Where are U.S. earthquakes most likely? A new map shows the hazard risks
Updates to the National Seismic Hazard Model have elevated the average ground shaking hazard across the country.
- Paleontology
The oldest known fossilized skin shows how life adapted to land
The nearly 290 million-year-old cast belonged to a species of amniotes, four-legged vertebrates that today comprises all reptiles, birds and mammals.
- Planetary Science
A toxic gas that could help spawn life has been found on Enceladus
Cassini data indicate that hydrogen cyanide, a key building block for life, exists on Saturn’s icy moon. A snakelike NASA robot might test for sure.
- Earth
Speed bumps under Thwaites Glacier could help slow its flow to the sea
A seismic survey of Thwaites’ icy underbelly shows the Antarctica glacier may be snagging on tall rises in land. That could help slow global sea level rise.
