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If you are a hiker or camper, you may have heard about Vestergaard Frandsen’s LifeStraw. It’s a hollow stick equipped with a series of filtering membranes. You put the end of the stick in a river or puddle ─ or a toilet, for that matter ─ and suck on it. By the time the water hits your lips, it is clean and safe ─ its filters are fine enough to trap virtually all bacteria, viruses and parasites. The product has a bigger cousin called the LifeStraw Family. You hang it on your wall, pour dirty water in the top, open the tap and clean water comes out the bottom. No power or replacement parts are required. Each unit cleans about 18,000 liters of water ─ enough for a family for three years. The market cost of the unit averages out at a penny per ten liters of water purified. Vestergaard Frandsen will distribute the LifeStraw Family for free. It is helping to sponsor a traveling campaign through the western part of Kenya set for April, 2011, that will reach 4 million families. The campaign bundles various products ─ each family that attends will get insecticide-treated bednets to protect against malaria, AIDS tests and counseling and a free LifeStraw Family.

“A program officer from a foundation recently asked me, ‘Is the work you’re doing STEM education or science education?’ ” said Elizabeth Stage, the director of the Lawrence Hall of Science at the University of California, Berkeley. “I drew him a Venn diagram, showing him what’s central about science and how that overlaps with technology, engineering and math.” Dr. Stage, a mathematician by training, thinks it’s a “false distinction” to “silo out” the different disciplines, and would much prefer to focus on what the fields have in common, like problem-solving, arguing from evidence and reconciling conflicting views. “That’s what we should have in the bulls’-eye of our target,” she said.

Yet others don’t frame the word “science” so narrowly, as the province of the given rather than of the forged. Science has always encompassed the applied and the basic, and the impulses to explore and to invent have always been linked. Galileo built a telescope and then trained it on the sky. Advances in technology illuminate realms beyond our born senses, and those insights in turn yield better scientific toys. Engineers use math and physics and the scientific mind-set in everything they design; and those who don’t, please let us know, so we can fly someone else’s airplane and not cross your bridge when we come to it. Whatever happened to the need for interdisciplinary thinking? Why promote a brand that codifies atomization? Besides, acronyms encourage rampant me-tooism. Mr. Dyak said that some have lobbied for the addition of medicine to the scholastic program, complete with a second M. “It’s called STEM squared,” he said. Even the arts are hankering for an orthographic position, he added. STEAM education: great books, labs and motherboards, and free rug cleaning, too.