00:00 A disaster in slow motion. Around the world, invasive species are having an economic impact
00:07 of more than 390 million euros per year. That's the conclusion of a UN study carried out over
00:15 four years across the globe. From plants to mammals, marine animals and insects, these
00:22 alien species are creating environmental chaos. Chief among the causes are climate change
00:27 and human activity. The introduction by anglers of minnows to this mountain lake in France
00:32 is a typical example.
00:40 The consequences are also deadly at times. It's thought the recent wildfires in Hawaii
01:05 that killed hundreds in devastated wide areas were accelerated by imported dry grass that
01:10 had been planted to feed livestock.
01:13 (electronic music)
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