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Articles sur Global perspectives

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Red-breasted Nuthatches are irrupting this winter across North America. Heather Elaine Ritchie/Flickr

When birds go roaming: The mystery of avian irruptions

During bird irruptions, hundreds or thousands of a single species show up outside their normal territory. Most of what we know about irruptions comes from data collected by citizen scientists.
Climate change is already delivering more extremes of wet and dry to the Pacific region. EPA/FRANCIS R. MALASIG

Droughts and flooding rains already more likely as climate change plays havoc with Pacific weather

New research shows that global warming has already begun to exacerbate extremes of rainfall in the Pacific region – with more to come.
A protest against President Joseph Kabila. The poster reads: “Kabila must leave without any conditions”. Reuters/Francois Lenoir

Africa faces a new threat to democracy: the ‘constitutional coup’

Attempts to deepen democracy in Africa by limiting presidential terms to two have not entirely quashed a culture of entitlement to rule. Glimpses of it persist, much against citizens’ wishes.
Have we really discovered other “Earth-like” planets orbiting around other stars? Understanding what we do and do not know about exoplanets is the key to answering this question. ESO/L. Calcada/N. Risinger/Reuters

Until we get better tools, excited reports of ‘habitable planets’ need to come back down to Earth

Over the last 20 years, advances in the field of exoplanet discovery have excited the imaginations of scientists and enthusiasts alike. But we’re in position to know yet whether a planet is habitable.
A member of Border Guard Bangladesh stands guard on a watchtower near the Bangladesh-Myanmar border to prevent Rohingya refugees from illegal border crossing. Mohammad Ponir Hossain/Reuters

Life in limbo: the Rohingya refugees trapped between Myanmar and Bangladesh

Abuses on Rohingyas have reached new height but neither Myanmar nor neighbouring Bangladesh are taking responsibilities to grant basic human rights to this population.

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