Trainers for a Day connect with these magnificent creatures hands-on during feeding and training exercise, and observe ultrasounds, heart rate and temperature measurement, something few ever see.

FORBES: Fun With Dolphins

His formula would become a way of taking the market's temperature, of providing a measurement.

FORBES: Mandelbrot: A Math Maverick Takes Stock

"Every half-metre, it takes a measurement of the temperature and the salinity, " said Mr Hadow.

BBC: Arctic team targets key ice data

When the explorer drills the ice to make a physical measurement of thickness, he will use the hole to lower a 4kg conductivity-temperature device (CTD) into the ocean below.

BBC: Arctic team targets key ice data