All Stories by Nikk Ogasa
- 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.
- Climate
Here’s how 2023 became the hottest year on record
The effects of climate change were on clear display in 2023 as records not only broke, but did so by surprising amounts.
- Space
A telescope dropped dark matter data from the edge of space. Here’s why
Last May, NASA’s Super Pressure Balloon Imaging Telescope crash-landed in rural Argentina. Scientists scrambled to recover the dark matter data aboard.
- Environment
Grassland and shrubland fires destroy more U.S. homes than forest fires
Grassland and shrubland fires destroyed nearly 11,000 homes in the contiguous United States from 1990 to 2020.
