Scientists in a truck outfitted with instruments race toward a storm.National Severe Storms Lab/NOAA Yvette Richardson, Penn State and Paul Markowski, Penn State Storm-chasing for science can be exciting and stressful – we know, because we do it. It has also been essential for developing today’s understanding of how tornadoes form and how they behave. In 1996, the movie “Twister” with Helen Hunt brought storm-chasing scientists into the public imagination and inspired a generation of atmospheric scientists. With the new “Twisters” movie hitting theaters, we’ve been getting questions about stor…