A scientist on scouts the landscape atop a small iceberg in Cornwallis Island, Canada, in a picture taken by photographer Martin Hartley, a runner-up in the "Spirit of Adventure" category.
"I like this because it's very graphic," Rossow said.
"I can imagine it being an opener to a [magazine] story because it clearly has space for type. And I think it was absolutely necessary to have a figure in this to give it a sense of scale. It also doesn't hurt that he's wearing red."
An adult and a child look out from the front of their home in Tiebele, the painted village of the Gurunsi people in southern Burkina Faso. Photographer Louis Montrose is the overall winner for this picture and another taken in Oaxaca, Mexico.
"I love that their clothing is similar," Rossow said of the Burkina Faso shot.
"And that there's so many layers. You have the two people, and what I assume is their house, and the depth going back into this village that is so amazingly painted that it keeps your eye very busy looking at all the details ... You could look at this photo a long time."
Photographer Jonathan Munshi, a runner-up in the "New Talent" category, captured a woman diving for clean water in Dhaka City, Bangladesh.
"I like the symmetry in this," Rossow said.
"The woman's body almost echoes the vessels of water. She has this beautiful bright color on, and then there's the purple on top of the other vessel. And then you have this wall that's been [covered in] graffiti and aged with time that has these subtle variations of color that add to the composition."
Residents along the northern border of Dhaka, Bangladesh, climb atop a train and squeeze into every available space during a Muslim congregation event. Photographer Yeow Kwang Yeo is the winner in the "Best Single Image" category.
"I look at this photo and I'm terrified, but then you look at the people's faces and they're all happy and enjoying themselves," Rossow said. "It's just an amazing moment."
"I love the bright color of the sky and the rumbling, roiling river, and then how the two men in the back are clearly straining so hard against these nets that are straining in the other direction," Rossow said.
Morning fog obscures Venezuela's Angel Falls—the world's highest single drop waterfall—in this photograph taken by Philip Lee Harvey, who was commended in the "Natural Elements" category.
"I think this is gorgeous. I'd put it on my wall," Rossow said.
"Fog always makes a more interesting photograph. I also love the way the dark forest in the foreground anchors it ... It's just a very well-composed, beautiful landscape, and it was the perfect time to take this picture."