Jeffrey Sachs : Earth 's population will hit 7 billion this month ; milestone , huge challenge . He says with earth 's resources already stretched thin , rapid growth is cause for concern . He asks : How do we increase opportunities for all , leave a usable planet for future ? That is a threat still with us today , but it is a warning , not an inevitable outcome . Sachs : We need to start by reducing the amount of waste in our lives and making sure that every person has access to clean water, food, shelter, health care, education, transportation, energy sources, etc
Jeffrey Sachs : Earth 's population will hit 7 billion this month ; milestone , huge challenge . He says with earth 's resources already stretched thin , rapid growth is cause for concern . He asks : How do we increase opportunities for all , leave a usable planet for future ? Sachs : We need to start by reducing the amount of waste in our lives and making sure that every person has access to clean water, food, shelter, health care, education, transportation, energy sources, etc