Katherine Krauss, 02/22/12

18-year-old senior at Greenhills School in Michigan

Any effort by any one country alone will inevitably be smaller than the collective acts of a group of nations; it's just simple math. We need more nations united behind a single cause.

Emma, The Emma Edition, 02/22/12

16-year-old NYC-based fashion blogger

Would you believe me if I told you there are hundreds of people living below New York City? The idea of mole people is depicted as mythical in pop culture, but they're as far from fantasy as can be.

Zach Veach, 02/22/12

17-year-old racecar driver

Everyone's looking for the golden opportunity of mentorship from someone special, someone who cares and someone who is willing to take you by the hand and potentially lead you to greatness.

Hugh Sterbakov, 02/21/12

Writer, Robot Chicken, Freshman

Last week, my favorite baseball player of all time passed away. Here's to Gary -- thanks for being a great childhood hero.

Jacob Brunette, 02/20/12

High school sophomore in Washington

As the situation stands now, Santorum has presented the first real threat to Romney's campaign. Whether or not he succeeds in the end, the primaries have just gotten a lot more interesting.

Shohini Kundu, 02/21/12

High school junior in Amherst, MA

In the U.K., Indians have managed to elevate themselves above "Pakis," to the point that even Indian immigrants are now referring to the immigrants of Pakistani origin as Pakis. What changed?

Matthew Resnick, 02/17/12

Junior, Eleanor Roosevelt High School, New York City

New York State needs effective teachers to teach the future generations -- and an effective system to support teachers. Education is a field where no corners can be cut.

Sam Lyons, 02/14/12

16-year-old junior at Harvard-Westlake School in Los Angeles, CA

My Fender Cyclone guitar is as much about my dad as it is about me. In fact, this is my dad's guitar. It just stays in my room and it's pretty much the only guitar I play.

Susannah Meyer, 02/17/12

15-year-old freshman at the Hewitt School in New York City

Insurance and convenience are two practical reasons for why my school chooses Dell products, but the state of Apple's factories may now serve as an ethical reason to support the school's choice.

Alton Lu, 02/17/12

18-year-old senior in high school

What happens if abortion is no longer legal? What happens when students are continually subjected to abstinence-only education and people unable to receive contraception?

Noah Fitzgerel, 02/16/12

17-year-old Editorials Editor of his high school newspaper

Equating radical Islam with popular Islam is simply ignorant.

Matthew Maron, 02/16/12

16-year-old high school junior in New York

We as a nation need to think, act, and live smarter. If we don't, all that we have worked hard for over the past 236 years could be lost forever.

Alexis Adams, 02/16/12

18-year-old participant in Global Citizen Year

I visited a slave castle on Senegal's Goree Island, which was one of the most powerful slave trade ports in the world from the 16th to the 19th century. It's a constant reminder of this country's tragic past.

Haylie Duff, 02/15/12

Actress and food blogger, "Real Girl's Kitchen"

After school, I know you're tired and it's easy to grab fast food. But I promise you will feel like a new person once you cut the junk. I'm talking about brain power, renewed energy, and clear skin.

Daniel Nehemia, 02/16/12

17-year-old high school senior in Israel

We have entered a time when opportunities are endless and a new way of thought is emerging. Students in Jerusalem have the passion to deal with a changing world through model UN.

Corey Stern, 02/14/12

16-year-old junior at George W. Hewlett High School in New York

Wouldn't we want someone like Romney, with experience as a CEO and a self-acquired net worth of over $200 million to run our nation? Doesn't his past show that he's capable of leading us in the right direction?

Simone Bernstein, 02/15/12

Sophomore at St. Bonaventure University

Youth around the world can and do make a positive impact through volunteer service. Global Youth Service Day is a day to celebrate the fact that you are never too young to start volunteering.