Related:

• Humans arrived in the Kaliko Islands about 7,000 years ago, and within 3,000 years most of the large mammal species that had lived in the forests of the Kaliko Islands had become extinct.
  Yet humans cannot have been a factor in the species' extinctions, because there is no evidence that the humans had any significant contact with the mammals....
• The following report appeared in an archaeology journal.
  "The discovery of distinctively shaped ceramic pots at various prehistoric sites scattered over a wide area has led archaeologists to ask how the pots were spread....
• The following appeared in an editorial in a business magazine.
  "Although the sales of Whirlwind video games have declined over the past two years, a recent survey of video-game players suggests that this sales trend is about to be reversed....
• The following appeared in an article from a popular newsmagazine.
  "In 1888 a stone was unearthed in northern Wisconsin with an inscription in an old Scandinavian alphabet and bearing the date 1362....
• The following appeared in a memo from a vice president of a large, highly diversified company.
  "Ten years ago our company had two new regional office buildings built in two different regions....
• The following appeared in the business section of a newspaper.
  "Given that the number of people in our country with some form of arthritis is expected to rise from 40 million to 60 million over the next twenty years, pharmaceutical companies that produce drugs for the treatment of arthritis should be very profitable....
• The following appeared in a newsletter on dental health.
  "A recent research study reported the experience of dentists whose patients had, over a period of five years, regularly used Flux Dental Floss as part of their dental hygiene routine....
• Yellow-legged frogs were once common in high-altitude lakes in the Sierra Nevada mountains, but they have become increasingly rare.
  Trout feed on tadpoles and young frogs. Few lakes in the Sierra Nevada had any trout in them until a hundred years ago....
• The following appeared in an editorial in the local newspaper of Workville.
  "Workers should be allowed to reduce their workload from 40 to 25 or even 20 hours per week because it is clear that people who work part-time instead of full-time have better health and improved morale....