This story was originally published in Yale Environment 360 and appears here as part of the Climate Desk collaboration. Like their Samburu ancestors going back to the 15th century, Pamela Lonolngenje’s family has been literally on the move for hundreds of years. One of around a half-dozen semi-nomadic tribes in the vast drylands of northern Kenya, the family spent years shifting locations to find water and grazing land for their goats and cattle, their primary source of income. Yet land conflicts, deadly cattle disputes with neighboring tribes, and drier, more…