The Fight Against AIDS is Filled with Heroes. Learn How You Can Be One Too. 


The Fight Against AIDS is Filled with Heroes. Learn How You Can Be One Too. | Bill Gates

https://www.gatesnotes.com/Health/The-Fight-Against-AIDS-is-Filled-with-Heroes?WT.mc_id=12_01_2017_06_AIDSHeroes_BG-TW_&WT.tsrc=BGTW&linkId=45387838

Black holes are simpler than forests and science has its limits. 


Black holes are simpler than forests and science has its limits | Aeon Ideas

https://aeon.co/ideas/black-holes-are-simpler-than-forests-and-science-has-its-limits