Stem cells engage in dialogue with the cells that regulate their futures
...tion in the miniscule niches of the body where the futures of stem cells are determined. Stem cells require these niches - nest-like microenvironments made up of regulatory cells ?in order to self-renew. Stem cells can divide and turn into many types of new cells. The niches help regulate the amount and ki...The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest
...auna, and climate, providing glimpses of plausible futures for this region. A study of deforestation response...f deforestation through 2050. The first of the two futures discussed is a business-as-usual scenario in which the forces of destruction continue unopposed. Spe......r to achieving the MDGs. In all the four plausible futures explored, scientists project progress in eliminating hunger, but at far slower rates than needed to halve the scourge by 2015. Changes in ecosystems such as deforestation influence the abundance of human pathogens such as malaria and cholera, as well...