Problem: Memory:

Stress has a significant effect on memory formation and learning. In response to stressful situations, the brain releases hormones and neurotransmitters (ex. glucocorticoids and catecholamines) which affect memory encoding processes in the hippocampus. Behavioural research on animals shows that chronic stress produces adrenal hormones which impact the hippocampal structure in the brains of rats. An experimental study by German cognitive psychologists L. Schwabe and O. Wolf demonstrates how learning under stress also decreases memory recall in humans. In this study, 48 healthy female and male university students participated in either a stress test or a control group. Those randomly assigned to the stress test group had a hand immersed in ice cold water (the reputable SECPT or 'Socially Evaluated Cold Pressor Test') for up to three minutes, while being monitored and videotaped. Both the stress and control groups were then presented with 32 words to memorize. Twenty-four hours later, both groups were tested to see how many words they could remember (free recall) as well as how many they could recognize from a larger list of words (recognition performance). The results showed a clear impairment of memory performance in the stress test group, who recalled 30% fewer words than the control group. The researchers suggest that stress experienced during learning distracts people by diverting their attention during the memory encoding process.

What can cause your memory to deterioriate and work better?
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A: unanswerable

Problem: Scarab beetles held religious and cultural symbolism in Old Egypt, Greece and some shamanistic Old World cultures. The ancient Chinese regarded cicadas as symbols of rebirth or immortality. In Mesopotamian literature, the epic poem of Gilgamesh has allusions to Odonata which signify the impossibility of immortality. Amongst the Aborigines of Australia of the Arrernte language groups, honey ants and witchety grubs served as personal clan totems. In the case of the 'San' bush-men of the Kalahari, it is the praying mantis which holds much cultural significance including creation and zen-like patience in waiting.:9
Cicadas symbolize immortality in what culture?
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Answer: Chinese

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
What little there was, started with Charles de Wailly's crypt in the church of St Leu-St Gilles (177380), and Claude Nicolas Ledoux's Barriere des Bonshommes (178589). First-hand evidence of Greek architecture was of very little importance to the French, due to the influence of Marc-Antoine Laugier's doctrines that sought to discern the principles of the Greeks instead of their mere practices. It would take until Laboustre's Neo-Grec of the second Empire for the Greek revival to flower briefly in France.
What started with the crypt of Claude Nicholas Ludoux?
A: unanswerable

Context and question: Their final aircraft design, the Silver Dart, embodied all of the advancements found in the earlier machines. On February 23, 1909, Bell was present as the Silver Dart flown by J.A.D. McCurdy from the frozen ice of Bras d'Or, made the first aircraft flight in Canada. Bell had worried that the flight was too dangerous and had arranged for a doctor to be on hand. With the successful flight, the AEA disbanded and the Silver Dart would revert to Baldwin and McCurdy who began the Canadian Aerodrome Company and would later demonstrate the aircraft to the Canadian Army.
What business did Baldwin and McCurdy start after the AEA folded?
Answer: Canadian Aerodrome Company

Question: Tourism is a vital industry for New York City, which has witnessed a growing combined volume of international and domestic tourists receiving approximately 51 million tourists in 2011, 54 million in 2013, and a record 56.4 million in 2014. Tourism generated an all-time high US$61.3 billion in overall economic impact for New York City in 2014.
Is there an answer to this question: How many tourists visited NYC in 2013?

Answer: 54 million

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
All birds lay amniotic eggs with hard shells made mostly of calcium carbonate. Hole and burrow nesting species tend to lay white or pale eggs, while open nesters lay camouflaged eggs. There are many exceptions to this pattern, however; the ground-nesting nightjars have pale eggs, and camouflage is instead provided by their plumage. Species that are victims of brood parasites have varying egg colours to improve the chances of spotting a parasite's egg, which forces female parasites to match their eggs to those of their hosts.
All birds lay eggs with hard shells made mostly out of what?
A:
calcium carbonate