Magazine

March-April 2016

Current Issue

March-April 2016

Volume: 104 Number: 2

In temperate forests, one of the first signs of spring is when the trees unfurl their leaves. As the climate warms worldwide, leaves are emerging earlier than a century ago, but not all the organisms that depend on them are changing in the same way or as quickly. The responses of different tree species to warming springtime temperatures also varies widely. In the photograph on the cover, leaves unfold on young beeches under a mixed forest canopy in the foothills of the Jura Mountains in Switzerland. In “Spring Budburst in a Changing Climate,” ecologists Richard B. Primack and Amanda S. Gallinat of Boston University explain how springtime schedules in temperate forests are changing. (Cover image courtesy of Yann Vitasse.)

In This Issue

  • Astronomy
  • Biology
  • Chemistry
  • Communications
  • Computer
  • Engineering
  • Environment
  • Evolution
  • Physics
  • Psychology
  • Technology

Spring Budburst in a Changing Climate

Richard B. Primack, Amanda S. Gallinat

Communications Environment

Henry David Thoreau’s 160-year-old field notes document the changing life in the woods, as a warming climate jumbles the timing of annual springtime schedules.

Meat-Eating Among the Earliest Humans

Briana Pobiner

Anthropology Evolution

Evidence of meat-eating among our distant human ancestors is hard to find and even harder to interpret, but researchers are beginning to piece together a coherent picture.