If you want to understand the larger spatial patterns and timing of drought in the arid and semiarid areas of the American West, you will need to look at tree ring and oxygen isotope data.

Estimates of past precipitation are made from proxies like tree rings, which can record amounts of precipitation and temperature. But tree rings are better at recording what happens during the spring and summer, when the tree is growing, than in the winter when the tree is not. To people outside science, the fact that they do not provide the same information on past precipitation is a concern, but the differing results are a good thing to geologists.

I make fun of numerology but I kind of like it. I can like it and still make fun of it because I don't take it too seriously.

Want to claim there is a mathematical secret, far beyond human intelligence, buried in religious texts?  Sure, I will listen, if it's on TV and well produced. It's fun to speculate that prayers and rituals have a pattern that contains some sacred rhythm and people 3,000 years ago were super smart about it and we are not.  It can get a little funky if you take it too seriously, though. Words no longer have meaning if they are instead numerical combinations.  Change a word, or add one, and you would apparently allow sleeping with your neighbor's wife or whatever in the Ten Commandments.

Very different complex networks, like global air traffic and neural networks, share very similar 'backbones', say a group of mathematicians, and by stripping each network down to their essential nodes and links, they found each network possesses a skeleton which shares common features, much like vertebrates do.

Mammals have evolved to look very different despite a common underlying structure and now it appears real-world complex networks have common descent in a similar way.

You've read a lot about 'invisibility' over the last few years.  Mathematicians and scientists have been working on various devices that enable invisibility cloaks which shield small objects from detection by microwaves or sound waves.

Countries with a higher per capita gross domestic product (GDP) are more likely to have searches for information about the future than information about the past, according to an analysis of Google search queries in Scientific Reports.

Is there a link between online behavior and real-world economic indicators?  Maybe.

For my book Brain Trust, I chatted with Ian Stewart, mathematician, prolific puzzle author and very fun person to shoot the mathematical breeze with, who explains the following best card trick I’ve ever seen, invented by mathemagician Art Benjamin of Harvey Mudd College.

First, Stewart says, prepare a stack of sixteen cards so that cards 1, 6, 11, and 16 are the four aces. Now deal them facedown in four rows of four. Turn up cards 3, 8, 9, and 14 to make the arrangement shown here.

So goes popular opinion: the lottery’s an egregious societal evil implemented and overseen by shape-shifting, blood-drinking reptilian aliens. And that may be largely true – designed to slowly and quietly bleed dry your pockets – that is, unless you learn to drive it.

Assuming drawings actually are random, all the science in the world can’t help you pick the winning numbers. But some fiendishly simple stats can make the dollar you put down likely to win back that dollar and more.