Why are the results of Kenya’s 2016 university entrance exam lower than 2015?

16. Many Kenyans were surprised after the education minister released results of the country’s 2016 university entrance exam. Just 15 percent of the more than 500,000 students who took the exam passed it. The results are much lower than last year. Some people believe the results are lower because officials took action to reduce cheating on the test.
17. There is good news for people who think they do not have time to exercise. A group of researchers from a university in Canada recently published a study that says short bursts of high-intensity exercise are good for you. In fact, this kind of exercise is just as good as spending up to an hour riding a bike or running steadily.
18. US Agriculture Secretary Tom Vilsack and Coca-Cola North America President Sandy Douglas recently announced that their partnership to restore and protect damaged watersheds with national forestlands achieved a milestone of one billion liters of water restored, and that the partnership will commit to double that outcome through 2018.
19. From the very beginning of his administration, addressing climate change has been one of President Barack Obama’s top priorities. Looking back today, the Obama Administration’s eight-year quest to lead global efforts to reduce harmful greenhouse gas emissions has been a historic success. In December 2015, the world came together to adopt the Paris Agreement on climate change.
20. Not many scientific studies begin like this: "Many hours of watching YouTube clips. Trying to find as many yawns as possible. " But for Andrew Gallup, an evolutionary psychologist who studies yawning at the State University of New York, it was all in a day’s work. Gallup says yawns have traditionally been known as a sign of sleepiness, or boredom. " But recent evidence suggests that yawning may function to promote brain cooling. "