“Leadership tomorrow depends on how we educate our students today — especially in science, technology, engineering and math,” President Obama has declared. While the words may be new, the sentiment goes back a long way, The New York Times reports. As Michael Wysession, an earth and planetary scientist at Washington University in St. Louis, wrote this year in the online edition of Scientific American. “Though we live in a thoroughly modern scientific world, our science education structure is now 120 years old.” The debate is nothing new, either; here and elsewhere in this issue are some historic highlights…