The last time Kyron was seen was after his morning science fair in 2010.

The Wall of Hope in Beaverton for Kyron Horman.

A corner of The Wall of Hope in Beaverton for Kyron Horman.

Scores of soggy and sun-bleached stuffed animals are tied to The Wall of Hope.

"Even miracles take a little time -Cinderella"

A candle for Kyron Horman's 9th birthday. He was 7 when he was last seen in 2010.

Kyron's science project was on the red-eyed tree frog. There are many of these frogs at his Wall of Hope.

Celebrating Kyron Horman's 12th birthday. He was 7 when we went missing in 2010.

It’s Science Fair season, where kids make volcanoes, tornadoes or baked-potato batteries and bring them to school. Students are excited to show off their hard work on their tri-folded poster boards.

It’s this time of year that I keep thinking of one kid in particular, Kyron Horman. He was a 7-year-old in Portland, Oregon who had a science project on the red-eyed tree frog. On a Friday morning he walked into his before-school science fair in with his stepmom and proudly had his on display.

The last time Kyron was seen was after his morning science fair in 2010.

He then reportedly headed to his first class and no one has seen him since. That was on June 4, 2010. No one has been charged in his disappearance and authorities are still investigating the case.

There’s been a lot of allegations and rumors about what happened to Kyron. Among them was a 2012 lawsuit filed by Kryon’s mother, Desiree Young, accusing the stepmother, Terri Horman, in Kyron’s disappearance. Young later dropped the case in July 2013, saying she didn’t want the civil action to jeapordize the ongoing police investigation.

Terri Horman has denied any involvement in Kyron’s disappearance, and authorities have not labeled her a suspect.

It was nearly five years ago when Kyron’s family noticed that he was missing when he failed to show up at his bus stop after school. The bus driver said the bespeckled second-grader never got on the bus. An urgent call to the school revealed that Kyron had been marked absent that day. Then came the frantic call to 911. Kyron was missing.

In the days and weeks that followed, authorities and volunteers searched and searched for Kyron. It was called Oregon’s largest search and rescue. His smiling face was on posters everywhere that were labeled MISSING.

It was that smiling face that first caught my attention last year while driving on a busy corridor in suburban Portland. There was a green space alongside the road that had a large poster of Kyron and it was surrounded by scores of stuffed animals, trinkets, signs and cards.

One day, I pulled over to get a closer look, curious as to what was the story behind this smiling boy. I thought maybe he had a disease and this was to raise awareness because many of the items on patch of land seemed new. Upon further inspection, I saw that many of the brightly colored signs had been laminated, the stuffed animals sat atop soggy, weather-worn ones. The chain linked fences were laced with cards and notes from classmates: Happy Easter 2012, “We miss you!” “Come home soon!”

It was sad. The longer I stood there, the sadder I grew. I thought of this boy’s parents who every day must face the soul-crushing question: Where’s my son?

After some Googling, I found out that I was at The Wall of Hope, which was first made at Kyron’s school when he went missing. It later moved to a fire station and then to the patch of land near Xtreme Edge Gym because that’s where Kyron’s father frequently works out.

Kryon, who has been described as sweet and timid, is among the 692,944 who entered into the National Center for Missing & Exploited Children’s database in 2010. (In 2014, that number was 466,949.)

Report any possible tips to 503-261-2847, or call 911 if the situation seems urgent. You can also email tips to the nonprofit Bring Kyron Home at tips@bringkyronhome.org or contact the National Center for Missing & Exploited Children 1-800-THE-LOST (1-800-843-5678).

Do whatever you can to help bring Kyron home.