A combination of warm sea surface temperatures and a weak or absent El Niño may create conditions conducive to tropical storm formation.

JoAnna Wendel
JoAnna Wendel is a freelance science writer and cartoonist. She covers topics ranging from the geology of faraway moons to the behavior of animals in our oceans. She served as a staff writer for Eos from 2014 to 2018, then worked in communications in NASA’s Planetary Sciences Division. JoAnna is now freelancing full time as a writer and artist.
Unseasonable Weather Entrenches Climate Opinions
Democrats and Republicans double down on their climate change opinions when faced with slightly cooler or warmer weather.
Plastic Waste Knows No Bounds
Despite the vastness of Earth’s oceans, human plastic pollution overwhelms even remote corners.
Starlike Brown Dwarf? Not Anymore
Because of a new, surprisingly smaller mass estimate for a much-studied, nearby brown dwarf, astronomers now regard the familiar object as merely planetlike.
New Instrument May Aid Search for Extraterrestrial Life
For 2 weeks on the Greenland ice cap, scientists tested an instrument that might help us find life on icy moons with oceans beneath their crusts.
Ancient Methane Seeps Tell Tale of Sudden Warming
Newly discovered rock mounds left by ancient methane seeps give scientists clues that methane on ancient ocean floor was released by ancient global warming.
Iranian Scientist Reflects on Trump’s Attempted Immigration Ban
Eos caught up with Solmaz Adeli, an Iranian researcher based in Germany who was almost barred from entering the United States for an important scientific meeting.
Thousands March Worldwide in Support of Science
Science enthusiasts descended on the National Mall in Washington, D. C., and demonstrated in more than 600 cities and other places globally in support of science and evidence-based decision-making.
What to Expect from Cassini's Final Views of Titan
Cassini will fly close to Saturn's largest moon one last time. Here's a look back at what the spacecraft has revealed and ahead to scientists' final close glimpses of the moon.
Establish a Scientific Integrity Advisory Board, Says New Report
Such an advisory board could help scientific institutions and their sponsors uphold legal and ethical standards in scientific research.