rassmann health workers step up testing for imported infections the african union nigeria garner and the u.s. of called on china to take immediate measures russia is reporting its largest daily increase yet of more than 2 and a half 1000 new cases the government says 148 russians have died with the number of infections of passing 18000 all prices have risen after major producers agreed to their biggest ever output cut the global market is oversupply because of a price war between saudi arabia and russia crushing demand from coronaviruses taking a toll to libya's internationally recognized government has ordered airstrikes targeting warlord holy for half those forces the strikes hit the cities of. west of the capital tripoli the news continues after risking it all stay with us. we understand the differences and similarities have cultures across the well. so no matter. how to seem to bring you the need and current affairs that matter to you. al-jazeera. was. the the. live. for many in the west african country of guinea life can be quite a struggle. a quarter of the country is covered i

rays to break down its chemical components canoed rassmann is hunting for a very specific element.a mensch there fight it in your own with a human excretes about one kilogram a fast 1st per year in cattle it's about 80 kilograms. or if we have a lot of phosphorous it's probable that it's from the feces of humans and animals. so it's an early indicator of the length of time they spot was settled and yesterday carter was a segment used for a short time or a longer duration the higher the phosphorus impact the higher the probability that the settlement was used for a long time even vaguely like that side a good notes for this. with their high tech equipment archaeologists have pinpointed many places where they could dig but they don't because digging destroys traces that hold out the promise of key insights with future as yet undeveloped methods you have know and if. we shoulder a responsibility into humans archaeology is a finite field besides do not grow back and things that have been excavated are lost to research. unfortunately this is an inherent part of archaeological excavation