Germany’s Neura is one of the companies at the forefront of efforts to use artificial intelligence in robotics, and crucial to whether Europe can close the gap with China.

© Roderick Aichinger for The New York Times

Governments and businesses around the world scrambled to prevent hackers from exploiting a vulnerability in PHP, a popular programming language.

© Geert Vanden Wijngaert/Associated Press

Manufacturers say they are close to perfecting a new, more efficient solar panel that could help the United States reclaim ground it lost.