My name is Matthew. I'm not someone who has many secrets, because I'm a terrible liar. But there is one huge secret that I kept for years-I failed my driving test. I had never failed a test before, and had never even come close. Driving made me anxious, but my parents told me I had to. They signed me up for driving lessons. I had gotten a perfect score for my written permit exam, but getting behind the wheel was a different story.

But when October 30th rolled around, my pride set in. I wanted to be like everyone else at my school, showing off the brand new license they'd gotten. Looking back on that special day, I can't remember if I was nervous. What I do remember is starting the test, pausing at a stop sign after a few seconds, and being asked by the instructor to pull over. I had received an auto-fail since my pause was indeed a pause and not a real stop. I wasn't upset that I was leaving without a license, but I was scared everyone would know that I had failed. So when I got to class, I told everyone I didn't want to take the test on my birthday.

One Friday a month later, I went to the test spot again and passed. Later that night I drove for the first time by myself, which brought to me an amazing feeling I've never experienced-but sill, 1 couldn't imagine ever telling anyone the truth. So I didn't. It wasn't until midway through college that I came clean. It turned out plenty of my college friends had failed too! And I gathered enough courage to speak the fact out. Yes, I had also failed.

Now I realize failure and imperfection are two things everyone has to experience, without which one couldn't make a true man.

A colorful colony of photosynthetic (光合的) cyanobacteria, known as blue-green algae (海藻) , have successfully powered a computer microprocessor for more than six months, according to a study published in the Journal Energy & Environmental Science.

During a pandemic lockdown, the algae-computer system was placed in the window of biochemist Paolo Bombelli's home. What he saw next really blew his mind: it sat there from February to August 2021, and all the while it was working. And even after the microprocessor has been disconnected, the cyanobacteria device continues to produce current. "Given the right conditions of light, temperature and water, I cannot predict when it will stop," said Bombelli.

Cyanobacteria harvest energy from sunlight and make it into food for themselves. For this study, the researchers put the power-providing microorganisms into a plastic and steel enclosure, about the size of an AA battery, along with an aluminum anode (铝正极) . Throughout the experiment, the connected microprocessor was programmed to do a bunch of calculations, and then check its own work. It did this in a 45-minute period, followed by 15 minutes of standby, continuously for months with the cyanobacteria unit as its only power source.

Even though the algae rely on a light source to feed, the bio-system continued to produce enough power to run the microprocessor in the dark. The scientists basically put down this phenomenon. to leftovers. When there was light, the cyanobacteria cooked up an over-abundance (过剩) of food, and when it was dark the microorganisms kept chewing on the extras.

According to Chris Howe, senior author of the study, the results suggest that the little bio-based battery substitute could serve as a way to power small electronics without rare earth elements, which are in short supply and under growing demand. Plus, the system could also help bridge the electricity divide, providing another power supply for people in rural areas or low-income countries.

Though the experiment's results are promising, it's important to keep in mind that the computer processor tested uses very little energy requiring only 0.3 microwatts to run. More research is needed to know exactly how much the tiny AA battery-sized device could scale up. Howe said, "Putting one on your roof isn't going to provide the power supply for your house at this stage."

The term Hudson River school was applied to the foremost representatives of nineteenth-century North American landscape painting. Apparently unknown during the golden days of the American landscape movement, which began around 1850 and lasted until the late1860's, the Hudson River school seems to have emerged in the 1870's as a direct result of the struggle between the old and the new generations of artists, each to assert its own style as there presentative American art. The older painters, most of whom were born before 1835, practiced in a mode often self-taught and monopolized by landscape subject matter and were securely established in and fostered by the reigning American art organization, the National Academy of Design.

The younger painters returning home from training in Europe worked more with figural subject matter and in a bold and impressionistic technique; their prospects for patronage in their own country were uncertain, and they sought to attract it by attaining academic recognition in New York. One of the results of the conflict between the two factions was that what in previous years had been referred to as the American, native, or, occasionally, New York school — the most representative school of American art in any genre — had by 1890 become firmly established in the minds of critics and public alike as the Hudson River school.

The sobriquet was first applied around 1879. While it was not intended as flattering, it was hardly inappropriate. The Academicians at whom it was aimed had worked and socialized in New York, the Hudson's port city, and had painted the river and its shores with varying frequency. Most important, perhaps, was that they had all maintained with a certain fidelity a manner of technique and composition consistent with those of America's first popular landscape artist, Thomas Cole, who built a career painting the Catskill Mountain scenery bordering the Hudson River.

A possible implication in the term applied to the group of landscapists was that many of them had, like Cole, lived on or near the banks of the Hudson. Further, the river had long served as the principal route to other sketching grounds favored by the Academicians, particularly the Adirondacks and the mountains of Vermont and New Hampshire different ways.