By the end of the next century, however, the earth may well be home to 10 billion human beings. One of the most pressing questions is, "Will there be enough food?". Many scientists answer an uneasy "yes" because we have used our grasslands without regard for the future. There is available technology to feed our growing human population while imposing minimal impact on natural systems. The challenges are to educate and to convince the world's societies to use it, not just for us but for Earth's other inhabitants as well.