Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
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Question: Two recent books look at the very human (sometimes all-too-human) process of trying to make sense of the known universe:  The Un-Discovered Islands: An Archipelago of Myths and Mysteries  Phantoms and Fakes  by Malachy Tallack  and The Planet Factory: Exoplanets and the Search for a Second Earth  by Elizabeth Tasker .  They 're so stylistically and scientifically disparate as to seem unrelated  but reading  them  in close succession makes for something greater than the sum of its parts â a joint atlas of human guesses in a world that seems destined to confound us.
 Elizabeth Tasker  knows all about that; The Planet Factory is all about the formation of worlds humanity might never clap eyes on. And if you're hoping for definitive answers about how things work closer to home  think again;  Tasker 's very clear that the scientific method is as often about being proven wrong. "The problem (and there is always a problem)" isn't just an aside on a particular theory  but a thesis for the field. This is a book about trying to map unknown seas in real time; the ghosts of the sailors peering into the dawn looking for Thule live in every telescopic survey.
The Planet Factory can feel intimidating; certainly you must come to it wanting to know everything there is to know about making planets  and hang in there as long as you can before the variables overwhelm you. ( Tasker  offers easy analogies by the handful  and while at first they may seem too easy  you'll appreciate them by the time you're trying to understand the optimum timing of planetary migration.)
The Planet Factory Exoplanets and the Search for a Second Earth by Elizabeth Tasker Hardcover  336 pages   purchase close overlay Buy Featured Book Your purchase helps support NPR programming. How?

Answer: Elizabeth Tasker


Question: Mariah Carey  undeterred by last yearâs performance  will take to the stage once again in Times Square to ring in the new year on live TV.
The star  along with Dick Clark Productions  issued a joint statement on Friday announcing  Carey  as the headliner for âDick Clarkâs New Yearâs Rockinâ Eve with Ryan Seacrestâ broadcast.
Careyâs manager blamed the production and technical difficulties that producers knowingly failed to fix. Dick Clark Productions called the accusations âoutrageous and frankly absurd.â  Carey  eventually broke her silence on the troubled performance  saying she was âmortifiedâ and that she intended to take a break from social media.
Now it seems as though everyone is ready to put the messy past behind them.  Carey  will join the likes of Britney Spears  Nick Jonas  Kelly Clarkson and Shawn Mendes as the world rings in 2018.
 Careyâs  forthcoming New Yearâs Eve performance will top an already merry holiday season for the star. In addition to performing her annual Christmas tour   Careyâs  famous single âAll I Want For Christmas Is Youâ has been played more than 100 million times this month alone  according to Forbes.

Answer: Mariah Carey


Question: During the first session at the Boys & Girls Club of Westminster recently   facilitator Jeovan Davila  asked the group of students what percentage of eighth-graders they believed used marijuana over the past 30 days. The guesses ranged from 10 percent to 60 percent. When  Davila  told them the correct answer was about 7 percent  the group looked surprised.
 Davila  said  he  doesn't lecture teens about what's right and wrong. Rather   he  gives them facts to help them make their own decisions in the future. For example  if they know that most of their peers don't use marijuana  perhaps they will be less likely to use it.
With the legalization of marijuana and the discussion on social media   Davila  has seen young people talking about the drug more. During the class  some said teens might want to use because they see their family members using marijuana legally.
"The kids do bring it up "  he  says. "We've just got to be ready  letting them know the facts."

Answer:
Jeovan Davila