GRASSLANDS

Scientists once believed that having many different plant species in grasslands kept food supplies steady. The idea was that if some plants struggled, others would thrive, balancing things out. But new research shows this doesn’t always work when climate change and human activity push ecosystems to

Droughts are getting worse. They're lasting longer and hitting harder. Scientists have been studying how this affects grasslands and shrublands all over the world. They looked at 74 different places and found some interesting things. First, most ecosystems can handle droughts for a while. They migh