Haven't signed into your Scholastic account before?
Teachers, not yet a subscriber?
Subscribers receive access to the website and print magazine.
You are being redirecting to Scholastic's authentication page...
Announcements & Tutorials
Renew Now, Pay Later
Sharing Google Activities
2 min.
Setting Up Student View
Exploring Your Issue
Using Text to Speech
Join Our Facebook Group!
1 min.
Subscriber Only Resources
Access this article and hundreds more like it with a subscription to Science World magazine.
Article Options
Presentation View
Numbers in the News
Jumping spider (See "10" below)
$9 billion
Estimated U.S. costs in 2015 to treat illnesses that could have been prevented by vaccinations. Flu was the most costly.
66 million
Age in years of the oldest fossilized voice box ever found. It was from a bird, so it may help scientists analyze what ancient birds sounded like.
15,000
Length in miles of the Trans Canada Trail, which will open this year as the longest trail in the world for hiking, biking, and horseback riding.
20
Number of states that now count computer science credits toward math or science high school graduation requirements, up from 14 in 2015.
10
Distance in feet from which jumping spiders can “hear” sound vibrations using sensitive hairs on their legs, according to a new study.