Toggle light / dark theme

Get the latest international news and world events from around the world.

Log in for authorized contributors

St Louis’s new fleet of 18 New Flyer electric buses powered by ABB chargers

The city of St. Louis, Missouri fleet plans to deploy 18 electric buses on the city’s busiest routes. Charging infrastructure for the 60-seat New Flyer buses will be provided by Swiss/Swedish electronics giant ABB.

St. Louis transit agency Metro Transit says it expects the e-buses to reduce carbon emissions by 100 to 160 tons per year, and to deliver up to $125,000 in maintenance savings and $400,000 in fuel savings over their 12-year lifespan.

ABB will provide 23 Buy America-compliant chargers, with a total of over 4.35 MW of charging capacity. ABB’s sequential charging system consists of 20 plug-in depot chargers, each with 150 kW of power, and three additional pantograph chargers. St. Louis’s buses can be fully charged in one hour. ABB says its fast-charging system easily integrates with existing transit schedules, so cities can switch to zero-emission buses without disrupting existing routes.

Looking Through Mojo Vision’s Newest AR Contact Lens

With batteries, motion sensors, and a microLED on board, Mojo lets me try out its first apps.


The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth, having come from a universe just 900 million years old. It’s currently the most distant star known, and the team has dubbed it Earendel*.

The discovery is a huge jump, as the previous record-holder for more distant star existed in a universe 4 billion years old.

The iconic observatory had some help from nature’s own optics: The vast mass of a foreground cluster of galaxies, sitting just so between us and the distant star, acts like a lens, its gravity magnifying the star’s light thousands-fold. The discovery is published in the March 31st Nature.

Meet Earendel, the Most Distant Star Astronomers Have Observed

The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth, having come from a universe just 900 million years old. It’s currently the most distant star known, and the team has dubbed it Earendel*.

The discovery is a huge jump, as the previous record-holder for more distant star existed in a universe 4 billion years old.

The iconic observatory had some help from nature’s own optics: The vast mass of a foreground cluster of galaxies, sitting just so between us and the distant star, acts like a lens, its gravity magnifying the star’s light thousands-fold. The discovery is published in the March 31st Nature.

Rewards in Reinforcement Learning Make Machines Behave Like Humans

Reward maximisation is one strategy that works for reinforcement learning to achieve general artificial intelligence. However, deep reinforcement learning algorithms shouldn’t depend on reward maximisation alone.


Identifying dual-purpose therapeutic targets implicated in aging and disease will extend healthspan and delay age-related health issues.