News
-
Take a Number: Kids show math insights without instruction
Kindergartners can solve relatively complex addition and subtraction problems if allowed to use their intuitive grasp of approximate quantities rather than being required to calculate exact solutions.
By Bruce Bower -
ChemistryPackaging Peril: Chemicals in food wrapping turn toxic
Chemicals that prevent grease from seeping through food packaging can transform into a suspected carcinogen.
-
Health & MedicineVisualizing Cancer: Images of tumors can detect gene expression
Subtle features in X-ray images of tumors let radiologists infer which genes are active in the cancerous growth.
-
AnimalsPothole Pals: Ants pave roads for fellow raiders
By throwing their bodies into tiny potholes on rough trails, army ants enable their comrade to race over them, improving the colony's overall foraging success.