the government of botswana is lifting a ban on hunting. cnn's david mckenzie is live with us right now. and david, you've done so much work covering the plight of elephants in southern africa. what's going on here? >> well, john, it's really shocking to many, good morning. and you look at those majestic herds that we have seen over the years in botswana and other countries in southern africa. and they are now under threat, say many, because the bots wannan government saying they are going to allow hunting of some 400 elephant per year. they are hitting back at critics saying that conservation is in their dna, john. that they are just right to help preserve those herds, that they are helping to stop the human/animal conflict. big elephants going into a farm yard. they can hurt and even kill people. some 30 people killed and/or injured each year say the government. but there's a bigger picture element here. cancer conservations say they're