2 . When I was a little boy growing up, my Mom, Dad, brothers and I lived in my Nana’s old house. It was surrounded by four huge vegetable gardens. And around the house so many flowers were planted. It was so beautiful there in the spring and summer. That wasn’t all, though. On the back porch Nana had dozens of potted plants hanging on hooks. She watered them, talked to them and nurtured them. And in the winter she would carry them all inside and set them on shelves near the windows of our enclosed front porch. There with a little water and a lot of love she kept them alive, green, and growing even during the coldest, darkest months.

As a boy I was puzzled by all the effort she put into them. I understood the vegetable gardens. They helped to feed the family all winter long. I even understood the flowers around the house. They were pretty and smelled so sweet in the summer months. The reason she put so much effort into caring for those potted plants, however, eluded me. They didn’t give us any food and they rarely had any flowers on them. They remained a mystery to my child’s mind.

Now as I’ve grown older I am beginning to understand why my Nana had those potted plants. It is the same reason I have so many pictures of sunrises and forests hanging in my home. They remind me during the dark, cold, winter months full of bare trees and yellow grass that light, love, and growth still exist. They remind me that Spring will come again. They remind me that God loves us and is still with us even when the earth doesn’t show it.

Today I see Nana’s potted plants in a new light. They are worth every bit of the love and care she put into them. But what tells me most about light and love is Nana herself. She is light to my soul even in my darkest times. And her love lives on in my heart even if she is in Heaven. May we all learn to love as she loved, shine as she shined, and live as she lived.

3 . I was surfing the Internet, planning for our 15th-anniversary trip when a perfect spot attracted me: The Shire of Montana, a “hobbit house”, which Jim my husband had dreamed about. I knew he’d be impressed. And our six-year-old daughter, Aurora, would like it, too. I was about to book our reservation when I saw a note on the website: No kids allowed. That ruined everything!

Luckily, there was an email address on the site. I plucked up the courage to contact the owner. Soon, a reply arrived, saying, “If you promise that your daughter is responsible and will not touch, she can come.” I was relieved, thinking Aurora was a good kid. “This will be okay,” I wrote back.

The day finally arrived. We piled into the car. I couldn’t help being excited, imagining Jim and Aurora’s reactions. We passed a sign that read, “The adventure begins …” Turning onto the Hobbit Lane, I felt a pan g of anxiety. As soon as we got out of the car, I pulled Aurora aside. “Children aren’t usually allowed here,” I said. “So you have to be very, very careful. You can look at everything, but don’t touch.” I explained the rule and how terrible it would be to damage anything. Aurora’s eyes widened at my no-nonsense tone. “I promise, Mom,” she said.

Obviously, my concern was superfluous. We spent several days at The Shire. Aurora was delighted at each discovery but she never disturbed a thing. She took her responsibility to protect the owner’s work seriously. It turned out that respecting boundaries didn’t take away the beauty and wonder, it allowed The Shire to remain beautiful and wonderful into the future.

Not so different from a marriage, I thought. Now I understood why we went to this place to celebrate our fifteenth anniversary. Jim and I moved through life side by side as a couple, and we’d learned to accept each other’s individuality and boundaries as well. Marriage is full of surprises, challenges and adventures. The key to making it work is respecting each other.

6 . In a fascinating discovery, western lowland gorillas (大猩猩) at Zoo Atlanta have been caught summoning their keepers using a strange cough-sneeze mixture, which researchers have called a “snough”. Only two other species have displayed this ability to create new vocalizations to attract our attention: zoo-housed chimpanzees and orangutans. Now, we can add gorillas to that list.

As many of us know, Koko put a spotlight on gorilla intelligence in the 1980s and 1990s with her incredible ability to communicate with humans using sign language. She was trained and worked hard at it, but now it seems gorillas have taken it upon themselves to establish unique communication with us in their own way.

Roberta Salmi, a biological anthropologist at the University of Georgia, and colleagues ran an experiment to confirm the purpose of the “snough”, by placing eight of the zoo’s gorillas in three different situations. In the first, only the keeper was present; in the second only the food was present; in the final one, the keeper was holding the food. The food and keeper were in sight but out of reach. The gorillas involved used the “snough” vocalization most when there was a human present with food, indicating the call is likely an attempt to get the keeper’s attention.

This complex vocal learning — the ability to produce unique calls — is rare in the animal kingdom and confirmed only in some species of birds, bats and elephants. But they all do so by imitating. The analysis showed the gorilla’s “snough” is a unique sound, not an imitation — although they are certainly capable of imitating us in other ways.

“These results demonstrate that gorillas can change their calls to produce a novel sound and furthermore confirm that they can produce their calls and gestures intentionally to change the attention state of their caregiver,” the team concluded in their paper. We’ve clearly long underestimated these clever souls.

7 . I’m not a good traveler. Without curiosity to get out and ________, traveling has never been my strong point. Sightseeing is not an experience that I find ________: when it’s too hot, I’m uncomfortable; when it’s too cold, I’m uncomfortable. Not knowing what the food will be like at new places has always made me ________.

It would be kind to say that I have a low sense of ________. So, I was ________ about doing a travel show that centered on pushing my ________. But it just goes to show that we’re never too old to ________ ourselves.

South Africa was the biggest surprise. I had never really ________ to go on safari (观兽旅行) and was not excited about the prospect.

Once I was ________ there, all of a sudden, I knew why people say it’s exciting. I started to develop a great ________ for the animals. We visited a rhino conservation park (犀牛保护公园), where rhinos which have been badly injured by hunters are taken good care of. I even bottle-fed these beautiful babies. The most memorable part was the people I ________.

I’ve always been a very ________ person. But the experience of meeting so many new people has been ________, allowing me to ________ some of the cobwebs (蜘蛛网) that have formed for many years. Seeing the world has helped me ________ my natural cynicism (悲观情绪) and turned me into a more outgoing and positive person.

9 . The age-old chore of dusting could soon be a thing of the past. Scientists are developing “self-cleaning” surfaces that make dust particles unable to stick to them. Researchers from the University of Texas at Austin say the particles instead stick to each other and simply roll off the surfaces with nothing more than the assistance of gravity.

The scientists altered the geometry (几何构造) of flat surfaces at a level invisible to human eyes. The team made a tightly-packed nanoscale (纳米级) network of pyramid-shaped structures on the surfaces which made it difficult for dust particles to stick to the material. Instead, the particles stick to each other before rolling off the material due to gravity.

The study, funded by a grant (拨款) from NASA’s Small Business Innovation Research program, tested the material by piling lunar dust on their engineered surfaces before turning them on their sides. The team found that just two percent of the surface remained dusty, compared with more than 35 percent of an unaltered smooth surface. The new surface could provide a passive solution to removing dust, as opposed to more active methods like using wipers and fluid to clear dust from a car windscreen.

“What we’ve demonstrated here is a surface that can clean itself,” says lead study author Chih-Hao Chang. “Particulates aren’t able to stick to the surface, so they come off using just the force of gravity.”

Study authors hope the material provides a solution to space dust, which can be extremely harmful in such a high-risk environment and is almost impossible to clean out. Space dust has previously caused great damage to NASA’s human spaceflight Apollo missions and has even caused rovers on Mars to malfunction and fail. “There’s not much you can do about lunar dust in space—it sticks to everything and there’s no real way to wipe it off,” says Samuel Lee, a lead author of the study. “Dust on solar panels of Mars rovers can cause them to fail.”

However, the researchers also believe the discovery could prove useful on Earth, preventing solar panels from collecting dust and losing efficiency. These surfaces may even protect our screens and windows from irritating dust.