Science Journal

Earthquake Early Warning Systems Taking Too Long to Roll Out, Scientists Say

For years, efforts have been under way to outfit the earthquake-prone West Coast of the U.S. with a system to warn residents before the shaking from a quake strikes. Now, scientists are pressing officials to speed up the process.

Men’s and Women’s Genes Help Explain Why Cancer Affects Them Differently

New research findings could eventually lead to strategies for preventing and treating cancer that take a patient’s sex into account.

New Reasons Why You Should Keep a Food Journal

Writing down every food you eat over a period of weeks—whether for weight loss or to identify triggers of allergic or other reactions—is one of the most powerful ways to change habits

Report on Fatal Amtrak Crash Likely to Urge Control System

Federal safety investigators examining the deadly May 2015 Amtrak train crash in Philadelphia have concluded the engineer lost track of where he was on the railroad’s busy Northeast Corridor, according to people familiar with the investigation.

Amazon Wants Alexa to Take Control of Your Smart Home

Amazon has set its sights on an automated, voice-controlled world, with the help of Alexa, a robotic voice assistant. 82

Science Video

How An Earthquake Warning System Works

0:59

How the Zika Virus Spreads From Mother to Fetus

2:38

Scientists Solve Mystery of Giraffe's Long Neck

2:00

Photos

Robotics & Engineering

Tech Helps Disabled Students Soar at Jersey City School

Google’s AI Tool—Parsey McParseface—Is Offered Free

U.S. and Chinese Tech Firms Team Up on Sensor Networks

Space

India Takes One Small Step Toward Its Own Space Shuttle

NASA Announces More Than 1,200 Newly Discovered Planets

SpaceX Lands Rocket on an Ocean Platform a Second Time

Environment

Canada Wildfire Raises Safety Issues Close to Home

EPA Issues Final Rules on Cutting Methane Emissions

Climbers Return to the Peak of Mount Everest After Two Years of Deadly Avalanches

WSJ Promotion

Coverage you trust. Insight you need.

Business, markets, foreign relations – With so much at stake this election, you need a voice you can trust. Become a WSJ Member Today – Only $12 for 12 Weeks.