Researchers have come up with a series of equations to predict how monarchs use their eyes and antennae to figure out how to get to Mexico.| Science News
Instead of nipping milkweed to drain the plants’ defensive sap, older monarch caterpillars may seek the toxic sap. Lab larvae guzzled it from a pipette.| Science News
Climate change is putting monarch butterflies’ overwintering forests in Mexico at risk. Could planting new forests solve that problem?| Science News