Cars have a maximum speed. If you depress the accelerator pedal
to the floor, the car's speed will increase until it reaches
that maximum. When a rocket fires its engine or boosters in
outer space, its speed increases no matter how fast it was
already traveling. Why does a car have a maximum speed, but not
a rocket? 7.3 million – Average amount, in tons, of commercially
caught "trash fish" worldwide thrown back into the ocean (Most
dead or dying.) 1 million – Estimated number of chickens
consumed hourly by Americans 30 – Percentage of Americans who
say genetically modified food is "basically safe" 27 –
Percentage who say it is "basically unsafe" 60 – Percentage of
foods sold today that have ingredients – significant or not –
that are derived from genetically modified crops Sources: UN
Food and Agriculture Organization; Physicians Committee for
Responsible Medicine; Pew Initiative on Food and Biotechnology;
Pennsylvania State University College of Agriculture BRAIN SWEAT
ANSWER A car stops accelerating when th