18 January 2019

The New Yorker: Have Aliens Found Us? A Harvard Astronomer on the Mysterious Interstellar Object ‘Oumuamua

Wait. The most unusual fact about it is that it deviates from an orbit that is shaped purely by the gravitational force of the sun. Usually, in the case of comets, such a deviation is caused by the evaporation of ice on the surface of the comet, creating gases that push the comet, like the rocket effect. That’s what comets show: a cometary tail of evaporated gas. We don’t see a cometary tail here, but, nevertheless, we see a deviation from the expected orbit. And that is the thing that triggered the paper. Once I realized that the object is moving differently than expected, then the question is what gives it the extra push. And, by the way, after our paper appeared, another paper came out with analysis that showed very tight limits on any carbon-based molecules in the vicinity of this object.[...]

The only thing that came to my mind is that maybe the light from the sun, as it bounces off its surface, gives it an extra push. It’s just like a wind bouncing off a sail on a sailboat. So we checked that and found that you need the thickness of the object to be less than a millimetre in order for that to work. If it is indeed less than a millimetre thick, if it is pushed by the sunlight, then it is maybe a light sail, and I could not think of any natural process that would make a light sail. It is much more likely that it is being made by artificial means, by a technological civilization.[...]

It’s possible that the civilization is not alive anymore, but it did send out a spacecraft. We ourselves sent out Voyager I and Voyager II. There could be a lot of equipment out there. The point is that this is the very first object we found from outside the solar system. It is very similar to when I walk on the beach with my daughter and look at the seashells that are swept ashore. Every now and then we find an object of artificial origin. And this could be a message in a bottle, and we should be open-minded. So we put this sentence in the paper.

Bloomberg: Britain’s a Small Country. Get Used to It.

The United Kingdom of Great Britain and Northern Ireland is a small country that is about to get even smaller. I know that this simple statement of fact will nevertheless infuriate many English people — and I do mean English people, not Scottish, Welsh or Northern Irish. Last week, at India’s Raisina Dialogue, the Spanish foreign minister said that there were two types of countries in Europe: countries that are small and countries that do not know that they are small. Aside from the English, no Europeans in the audience were upset at this plain-speaking. Not even the French. [...]

May has resolutely ruled out another referendum, but this is more than just her failure. After all, even if somehow Jeremy Corbyn’s Labour Party manages to unseat her, Labour’s approach to Europe is as predicated on fantasies as May’s. Corbyn is on record as saying he wants a customs union with the European Union that allows Britain to negotiate its own trade deals; this is, quite simply, impossible. It reflects a notion of British indispensability that nobody outside England shares.

The British can blame no one but themselves. While they’ve never been enthusiastic Europeans, their decision to be the first country to withdraw from the EU is revealing of a basic inability to grasp their vastly diminished place in the world. That they are a member of the United Nations Security Council means little; that reflects merely the power that the British Empire had in 1945, not the U.K.’s power today. Nor is being a nuclear-weapons state much of a big deal any more: Such basket cases as North Korea have the bomb. Most of Britain’s foreign policy influence grows out of its loyalty to the U.S., and Britons’ disproportionate cultural influence derives from the fact that they happen to speak the same language as the world’s sole cultural superpower.  [...]

I write this column from Vienna, an imperial capital grander even than London and one that has also been long without an empire to rule. Austria’s capital, unlike Britain’s, has come to terms with its new status. A profoundly liveable city, it prospers as Western Europe’s bridgehead in the east, and it has an easy pride in its history of intellectual innovation and artistic excellence.

The Conversation: Bees and butterflies are under threat from urbanisation – here’s how city-dwellers can help

It’s alarming, then, that pollinators are under threat from factors including more intense farming, climate change, disease and changing land use, such as urbanisation. Yet recent studies have suggested that urban areas could actually be beneficial, at least for some pollinators, as higher numbers of bee species have been recorded in UK towns and cities, compared with neighbouring farmland.  [...]

We also recorded high numbers of pollinating insects in gardens. Residential gardens made up between a quarter and a third of the total area of the four cities we sampled, so they’re really a crucial habitat for bees and other pollinators in cities. That’s why urban planners and developers need to create new housing developments with gardens. [...]

Rather than paving, decking and neatly mown lawns, gardeners need to be planting flowers, shrubs and bushes that are good for pollinators. Choose plants that have plenty of pollen and nectar that is accessible to pollinators, and aim to have flowers throughout the year to provide a constant supply of food. Our research suggests that borage and lavender are particularly attractive for pollinators.[...]

Parks, road verges and other green spaces make up around a third of cities, however our study found that they contain far fewer pollinators than gardens. Our results suggest that increasing the numbers of flowers in these areas, potentially by mowing less often, could have a real benefit for pollinators (and save money). There are already several initiatives underway to encourage local authorities to mow less often.

statista: The EU countries with the most (and least) GPs

t's not uncommon in some countries to see a queue extending down the street when a new medical practice opens its doors to the public for the first time. Likewise, many know the frustration and bafflement that arises when calling for an appointment with their doctor at the start of the day, only to be told there are already none left. As new data from Eurostat shows though, the chances of encountering these problems are likely to vary greatly from country to country. When it comes to general practitioners (GPs) per 100,000 population, Portugal is way out in front in the EU with 253. The UK is low down on the list with only 76 and Greece is rock bottom with a mere 42.

Metro News: Past of top Brexiteers comes back to haunt them on massive billboards

Giant posters have emerged showing previous quotes and promises of prominent Brexit politicians. 

Pro-Remain group Led By Donkeys put up the billboards around Dover to remind people of what our MPs said.

The group said: ‘If they want us to trust their judgment as we enter the choppy waters of Brexit it’s right that we remind ourselves of their record.’ 

The new posters include quotes from arch Brexiteer Jacob Rees-Mogg, Prime Minister Theresa May, former Brexit secretary Dominic Raab and International Trade Secretary Liam Fox.