2 . October 19th marks the beginning of Diwali, the Hindu festival of lights which is marked by colorful but harmful fireworks across India. But this year, the country's top court has moved to carry out a complete ban (禁令) on the sale of fireworks in and around New Delhi. The decision is intended to help improve the Indian capital's poor air quality, but will it work?

It is reported that air pollution led to 1.1 million deaths in India in 2015. New Delhi, considered among India's worst cities in terms of air quality, is on the front line in fighting the harmful effects. But at present, the government's pollution policy largely appears after pollution rather than before pollution. The smog-reducing measures, which include banning trucks from the city's roads and closing coal-fired power plants, are only carried out during periods of extreme pollution.

Air quality measurements provided by the Delhi Pollution Control Committee record smog levels across the city in real time. Those levels are based on the amount of PM 2.5, which are considered particularly harmful because they are small enough to get deep into the lungs and pass into other organs (器官)，causing serious health risks.

The sale of fireworks was illegal last November following the situation of dangerously high PM 2.5 levels immediately after Diwali. However,the Indian Supreme Court thought a complete ban would be an extreme step. As a result,that order was reversed (撤销) this month. It is believed by the public that the government is unlikely to provide a lasting solution.

Fireworks aren't the only reason behind New Delhi's smog. In fact, New Delhi's pollution is also affected by its unfortunate geography. Sitting in a natural bowl and Surrounded by industrial and agricultural centers, the city keeps much of the pollution.

4 . Do you want to go to take a vacation in Northern Ireland? If you do, here are some places where you can go.

The Sperrins are Northern Ireland's largest mountains and also its least explored. Starting from Strabane in County Tyrone to the shores of Lough Neagh in the east, Northern Ireland＇s largest upland area is a designated （指定的）Area of Outstanding Natural Beauty.

The wild scenery of the Mourne Mountains sweeps down to the sea. It is the place where C. S. Lewis found his fantastic winter-land ofNarnia come to shape in his mind, which inspired him to write The Lion, the Witch and the Wardrobe.The Mourne Mountains in County Down are famous for a lot of things such as challenging peaks and clear lakes.

The ruin of Dunluce Castle sees a long and amaz- ing history.The castle was first built on the amazing coastal cliffs （悬崖）of north County Antrim by the MacQuillan family around 1500. The earliest written record of the castle was in 1513. The amazing history of Dunluce is matched by tales of how the castle kitchens fell into the sea one stormy night in 1639.

Connected to the cliffs by a rope bridge across the Atlantic Ocean,Carrick-a-Rede Island (home to a single building- a fisherman's small house) is the final destination. Suspended （悬空的）almost 100 ft （30m） above sea level， the rope bridge was first made by a fisherman 350 years ago.In 2016,Carrick-a-Rede welcomed the highest number of visitors ever to this exciting rope bridge experience.