there's no pasture, there's no water for them. more frequent droughts suggest climate change is already taking its toll on the region. the impact on people is devastating. loss of livelihood and a direct threat to survival. anne soy, bbc news, wajir. powerful images of a crisis yet to fully unfold. scientists in britain have used gene editing technology to create female—only and male—only litters of mice. they say their technique could eventually be applied to chickens to ensure that only egg—producing females are hatched. our science correspondent pallab ghosh reports. half of these chicks are useless to the farming industry because they're male and don't lay eggs, so they have to be killed. that problem could be solved thanks to a breakthrough that enables scientists to reprogram animals to produce only females. scientists to reprogramme animals to produce only females. some six to seven billion male layer