theSIGNAL SCIENCE
24 August 2026
"An epidemic is a social event that happens to have a biological cause."
Science

Congo's Ebola Outbreak Becomes Deadliest in History

More than 2,000 lives have been lost since May, yet the disease continues to spread — and the reasons why are both heartbreaking and revealing.

Start with a number: 2,000. That is how many people have died from Ebola in the Democratic Republic of the Congo since the first case of this epidemic was confirmed in May. It is a figure that has now surpassed every previous outbreak in the country's recorded history, making this the deadliest Ebola crisis the DRC has ever faced. For a disease first identified near the Ebola River in 1976, that is a grim and significant milestone.

So why is it so hard to stop? Health teams working in the eastern provinces face challenges that go far beyond the biology of the virus itself. Armed conflict in the region has made it dangerous — sometimes impossible — for medical workers to reach patients. Communities, which have experienced years of distrust toward outside institutions, are sometimes reluctant to accept treatment or report cases.

When people are afraid, and when governments or international agencies have let them down before, suspicion can spread almost as fast as a virus. This is a pattern that health experts have also observed during outbreaks in West Africa and parts of South Asia, where social trust has proven to be as critical as any vaccine. The Africa Centres for Disease Control and Prevention has been working to respond. Yap Boum II, a prominent figure at CDC Africa, has spoken about the urgent need to rebuild community confidence alongside the medical response — emphasising that treatment centres and contact tracing alone are not enough without local cooperation.

Photo: TopSphere Media / Unsplash
A health worker in protective equipment prepares supplies at an Ebola treatment centre in eastern DRC.
Discuss
  • Why might communities in conflict zones distrust medical workers, even during a deadly outbreak?
  • How does armed conflict make it harder to contain the spread of infectious diseases?
  • What lessons from the West African Ebola outbreak of 2014–16 could be applied in the DRC today?
Science

A Little Big Bang in the Lab

One millionth of a second after the Big Bang, the Universe was not made of atoms or stars. It was a swirling, superheated soup called quark-gluon plasma — and scientists at CERN have just recreated it in a surprisingly tiny package. Physicists at Copenhagen's Niels Bohr Institute, working with the ALICE collaboration, smashed oxygen-16 and neon-20 nuclei together at near light-speed. The result? Microscopic droplets of primordial matter — far smaller than anyone expected to work. Associate Professor You Zhou calls it a "Little Big Bang." His team has now proven that even small nuclei can trigger this extreme transition, pushing the boundaries of what matter can become.…
  • Should governments keep funding extreme physics experiments with no immediate practical use?
Treatment centres and contact tracing alone are not enough without local cooperation.
Yap Boum II, CDC Africa
Science

Moon crew wins America's top space medal

On 1 April, four astronauts climbed aboard Artemis II and flew farther from Earth than any human since Apollo 13's desperate detour in 1970 — reaching 252,756 miles above the lunar surface. Canada's Jeremy Hansen became the first non-American ever to fly to the moon. Now Cmdr Reid Wiseman, Victor Glover, Christina Koch, and Hansen will receive the Congressional Space Medal of Honor on 28 August — an award held by only 30 people, including Neil Armstrong and John Glenn. The honour arrives as NASA faces a proposed 23% budget cut.…
  • Should non-Americans receive US space medals for missions on American spacecraft?
EUROPE · Science
Heat wave-hit Europe logs over 30,000 excess summer deaths: First figures
ASIA · Science
Climate change could triple the price of wheat
WORLD · Science
Ozempic does something unexpected to the brain’s hunger neurons
AFRICA · Science
Rising carbon dioxide is supercharging grass growth in African savannas, study finds
theSIGNAL IN THE LAB
1VOCABULARY
surpassedreluctant
contact tracingcollaborationprimordial
desperate detourproposed
2GRAMMAR FOCUS
Passive voice — full range (simple, continuous, perfect, modal passive)
The passive voice is formed with a form of 'be' plus a past participle; it can appear in any tense or with modal verbs (e.g. 'must be confirmed', 'has been reported', 'was being treated') to shift focus from the agent to the action or receiver.
has been rewritten · are being put · could be rebuilt · was confirmed · have been observed · must be reached · is being recreated
  1. The first case of the Ebola epidemic in May, marking the start of the deadliest outbreak in the DRC's history.
  2. Similar patterns of community distrust by health experts during outbreaks in West Africa and parts of South Asia.
  3. New strategies in place, including improved vaccination efforts and closer collaboration with community leaders.
  4. The record books by this epidemic, which has now surpassed every previous Ebola crisis in the country.
  5. Quark-gluon plasma at CERN in a surprisingly tiny package by physicists working with the ALICE collaboration.
  6. If social trust continues to erode, patients by medical teams before the situation becomes critical.
3DEPENDENT PREPOSITIONS
Complete each phrase with the correct preposition. All from today's articles.
  1. to surpass ___ every previous record
  2. reluctant ___ accept treatment
  3. suspicion can spread ___ fast ___ a virus
  4. collaboration ___ community leaders
  5. pushing ___ the boundaries of what matter can become
4CRITICAL THINKING
The article suggests that social trust can be 'as critical as any vaccine' in stopping an outbreak. If community cooperation matters as much as medicine, what does this imply about how health agencies should be structured and funded — and who should be leading the response on the ground?
5CREATIVE · HEADLINES
Write a headline for the top story in each of the following styles. One line each, no explanation:
  • TABLOID NEWSPAPER
  • LUXURY MAGAZINE
  • ACTIVIST BLOG
6WRITING
The three stories in today's edition — a deadly outbreak, a physics breakthrough, and a space mission — all received very different levels of global media attention. Write a short argument explaining which story deserves the most coverage and why the others tend to be overlooked.
7DEGREES OF EXTREMITY
Complete each ladder from mild to strong.
  • uncommon
  • worried
  • noteworthy
  • warm
  • reduce
  • reluctant
8SPEAKING
  1. Can a 23% budget cut end NASA's long-term space ambitions?
  2. Should community leaders lead outbreak responses instead of international agencies?
  3. What makes quark-gluon plasma significant beyond satisfying scientific curiosity?
  4. How do record-breaking death tolls change political will to act?