High-speed rail moves millions throughout the world every day – but in the US, high cost and low use make its future bumpy

By Stephen Mattingly, Professor of Civil Engineering, University of Texas at Arlington

High-speed rail systems are found all over the globe. Japan’s bullet train began operating in 1964. China will have 31,000 miles (50,000 kilometers) of high-speed track by the end of 2025. The fastest train in Europe goes almost 200 mph (320 kph). Yet high-speed…

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~	Google is relying on its own chips for its AI system Gemini. Here’s why that’s a seismic change for the industry

~	Before trips to Mars, we need better protection from cosmic rays

~	The Beatles’ movie Help! featured crude racial stereotypes – but it shouldn’t be hidden away

~	DNA from soil could soon reveal who lived in ice age caves

~	We are hardwired to sing − and it’s good for us, too

~	Why protecting Colorado children from dying of domestic violence is such a hard problem

~	Ranked choice voting outperforms the winner-take-all system used to elect nearly every US politician

~	Sugar starts corroding your teeth within seconds – here’s how to protect your pearly whites from decay

~	Google plans to power a new data center with fossil fuels, yet release almost no emissions – here’s how its carbon capture tech works

~	Why do family companies even exist? They know how to ‘win without fighting’