Japan’s hay fever sufferers have been warned to brace themselves for significantly higher levels of pollen this spring, with some already reporting having runny noses and itchy eyes for days. Hay fever season typically starts in Tokyo and eastern parts of the country in early February, peaks towards the end of the month and eases from mid-March. It affects the southern and other parts of the country slightly later. According to Weathernews, a weather information company which monitors the...