[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"external-oc-1189":3},{"payload":4,"id":7,"user":8,"level":14,"course":15,"activity":16,"activity_slug":17,"title":6,"topic":18,"tone":19,"stats":20,"created":23,"score":24,"is_favorite":25,"public":26,"is_external":25},{"text":5,"title":6},"Artificial lighting has transformed modern cities, making streets safer and public spaces more attractive at night. However, it has also brought problems that were not always obvious at first. Many animals depend (0) ON darkness to hunt, rest or reproduce, and bright urban lights can interfere (1) .......... these natural patterns. Birds, for example, may become confused by illuminated buildings and fly (2) .......... them instead of continuing their journey.\n\nHumans are affected too. Researchers have found that people who are exposed (3) .......... strong artificial light late at night may sleep less well. This is because the body is less able to recognise when it is time to rest. In addition, city residents often complain that there is too (4) .......... light coming through their windows, especially in areas where advertising screens stay on all night.\n\nFor this reason, some councils are beginning to think more carefully about how lighting is used. Rather (5) .......... simply installing brighter lamps everywhere, they are testing smarter systems that direct light only where it is needed. Such measures can result (6) .......... lower energy use and a healthier environment. They may also help people appreciate the night sky, which is hardly visible in places (7) .......... artificial lighting is excessive. If cities plan well, they can benefit from lighting without losing the advantages (8) .......... darkness.","City Lights",1189,{"id":9,"username":10,"first_name":11,"last_name":12,"image":13},25748,"aimar-garcia","Aimar","Garcia","https://lh3.googleusercontent.com/a/ACg8ocIsnuNr45_-TrDZvXZoPJwjdCOoXBPoJQ22a_4V2lonz7qCAEvE=s96-c","B2","Reading","Open Cloze","open-cloze","Create an exercise about the impact of artificial lighting on cities","Standard",{"times_played":21,"num_favorites":22},14,1,"2026-06-17T15:29:22",null,false,true]