World losing high-stakes fight against invasive species

Invasive species that wreck crops, ravage forests, spread disease, and upend ecosystems are spreading ever faster across the globe, and humanity has not been able to stem the tide, a major scientific assessment said Monday.

Water hyacinth pest chokes Iraq's vital waterways

The broad leaves and delicate purple flowers floating on the Euphrates look breathtaking—but they are suffocating the waterways of Iraq, celebrated as the "land of the two rivers".

In Nigeria's Lagos, aquatic weed plagues waterways

Traffic jams on the snarled up roads of Nigeria's megacity of Lagos are legendary, but a growing problem is also clogging up the waterways of Africa's biggest city—water hyacinths.

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