Cardiac performance in patients with HF can be determined with measurement of the time for peak oxygen uptake to decrease by more than 12.5%.

Even as schools have banned phones, the pandemic-era practice of giving students their own laptops and tablets has remained.

Interruptions, to-do lists, lack of autonomy — “time poverty” depends more on perceived shortages of time than actual ones, recent research suggests.

There’s no direct formula for calculating what billionaires earn in a day. But to get a rough idea, assume your typical ...