Solar Impulse Attempts Historic Flight Across the Pacific
[Editor's note: Poor weather conditions are forcing Solar Impulse pilot André Borschberg to land in Nagoya, Japan at approximately 23:00 local time (14:00 GMT). Borschberg will wait for better weather conditions to continue his flight across the Pacific.]
Solar Impulse 2, the first solar airplane able to sustain flight at night with a pilot on board has been making its way around the world over the past few months. The plane took off today a little after 2 a.m. on Sunday in Nanjing, China. The flight from Nanjing to Honolulu, Hawaii is the seventh and longest leg of the first round-the-world solar flight. It will take an estimated six days to complete the roughly 5,000-mile journey. The first leg of the journey took place in early March, taking off from from Abu Dhabi in the United Arab Emirates and landing in the Omani capital, Muscat.
— Bertrand PICCARD (@bertrandpiccard) May 30, 2015
If the flight is successful, it will be the longest ever flight on solar power, both in terms of distance and time.
"Flying across oceans without fuel means taking renewable energy to the ultimate level," says the Solar Impulse team. The plane, which has been piloted by both André Borschberg and Bertrand Piccard, has a wingspan bigger than that of a Boeing 747 but it weights only one percent of that—about the weight of a large passenger car. Built into the wing are 17,000 solar cells that feed four electric motors and recharge lithium batteries for night flight.
— SOLAR IMPULSE (@solarimpulse) May 30, 2015
The flight from Nanjing has been delayed for weeks due to weather conditions over the Pacific, which has made the build up to today's takeoff even more exciting. "A cold front over the ocean created 'a wall of clouds and thunderstorms stretching from Taiwan to above the east coast of Japan,'" the team told CNN. But when the team found a break in the weather, they decided to go for it. You can watch live coverage of the event here:
And you can even track the flight in real-time on their website. You can track the plane's altitude, its distance, its energy use, the air temperature and even what the pilot is doing at the current moment (piloting, interview, yoga, self-hypnosis, resting, eating or using the bathroom).
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By Naomi Larsson
For centuries, the delicate silver dove has been a symbol of love and fidelity.
Biodiversity and Habitat Loss<p>Their near extinction is a symbol of the <a href="https://www.dw.com/en/global-biodiversity-outlook-targets-extinction-summit-new-york-pledge/a-54932895" target="_blank">biodiversity crisis</a> in the UK, largely driven by habitat destruction. Britain is now one of the countries with the most <a href="https://www.wwf.org.uk/future-of-UK-nature#:~:text=The%20UK%20is%20one%20of,than%20half%20are%20in%20decline" target="_blank">depleted nature</a> in the world according to the World Wildlife Fund. Half its plant and animal species are in decline and more than <a href="https://www.rspb.org.uk/about-the-rspb/about-us/media-centre/press-releases/let-nature-sing-wales/#:~:text=a%20natural%20tragedy.-,Over%2040%20million%20birds%20have%20vanished%20from%20UK%20skies%20in,unaware%20of%20the%20impending%20danger" target="_blank">40 million birds</a> have vanished in just half a century.</p><p>"[Turtle doves] are the canary in the [coal] mine because there are all these other species before it and after it," said Tree. "It's an umbrella for all the other species that are heading that way."</p><p>Turtle doves migrate south through Europe to sub-Saharan Africa between July and September, ending up in dry woodland and farmland areas of countries like Mali and Senegal for winter. </p><p>Droughts in West Africa and the Sahel region are believed to have contributed to the fall in turtle dove species recorded in northern Europe, with low rainfall reducing supplies of the seeds and insects the birds rely on for energy for the long journey home.</p>
Conservation and Farming<p><a href="https://www.operationturtledove.org/" target="_blank" rel="noopener noreferrer">Operation Turtle Dove,</a> a partnership project of charities including the Essex Wildlife trust, works with landowners and farmers to actively build turtle dove habitat.</p><p>Outten works with <a href="https://www.ebws.org.uk/birdsites/blue-house-farm-ewt-north-fambridge" target="_blank">Blue House Farm</a>, a 660-acre nature reserve in the UK county of Essex, where they have replicated weedy fallow plots. </p><p>"We work on it every year to make sure it's in the condition it needs to be with plants such as clovers and black medic," Outten said. "These plants are native to the landscape and produce the seed the birds feed on." </p><p>The birds eat a wide range of seeds from various plants that would have been abundant 50 or 100 years ago, added Guy Anderson, program manager for species recovery with The Royal Society for the Protection of Birds (RSPB). </p><p>"But it's simply true that with the gradual process of <a href="https://www.dw.com/en/farming-without-pesticides-how-can-we-make-agriculture-greener/a-52216796" target="_blank" rel="noopener noreferrer">intensifying our agricultural production</a>, the availability of those seeds has dropped and dropped," said Anderson.</p><p>Part of the project includes supplementary feeding — providing sources of food in the form of seed or grain. Under the Countryside Stewardship Scheme in England, farmers can receive financial support to create a turtle dove habitat. </p><p>Though they haven't recorded an increase in doves across the sites in the four years of working on the project, Outten said they are seeing improvements in how landowners and farmers manage habitat for the birds. </p>
A Turtle Dove Haven<p>The 3,500-acre Knepp Estate in West Sussex is another project taking a different approach and one of the few places where turtle dove numbers are increasing.</p><p>Isabella Tree and her husband Charlie Burrell converted their intensively farmed land into a rewilding project almost 20 years ago. They have let the land return to nature.</p><p>Just one year after they'd finished <a href="https://www.dw.com/en/uks-most-talented-architects-are-not-human/a-35952128" target="_blank">rewilding</a> the southern part of their property, they heard turtle doves for the first time. It's now a breeding hotspot for the birds with an estimated 19 pairs. Knepp is also home to <a href="https://www.rewildingbritain.org.uk/rewilding/rewilding-projects/knepp-estate" target="_blank" rel="noopener noreferrer">2% of the UK's population</a> of nightingales. </p><p>Tree is critical of supplementary feeding schemes that, in her view, are short term. She questions the chances of turtle doves getting to feed on scattered seeds before other mammals eat them first.</p>
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