One way to feed the globe’s growing population is to ramp up intensive farming in tropical regions, but doing so will require a lot of fertilizer—particularly phosphorus. This is not only because it is often present at very low levels in tropical soils, but also because many of these soils bind added phosphorus fertilizer, making it less available to crops.
The dietary preferences of deer may be promoting the spread of such invasive species as garlic mustard, Japanese barberry, and Japanese stiltgrass.
The Amazon rainforest has long been known for its lush vegetation and diverse wildlife—perhaps even more than we previously thought. A new study shows tapping the expertise of indigenous hunters can provide more accurate animal counts than modern sampling techniques.