PulsePoint is a non-profit foundation based in San Francisco, California. Created in 2011, PulsePoint is devoted to helping local public safety agencies improve communications with citizens and empower them to help reduce the millions of annual deaths from Sudden Cardiac Arrest (SCA).

The foundation is chaired by Richard Price, former Fire Chief of the San Ramon Valley Fire Protection District, and is guided by an Advisory Board made up of tech and medical professionals.

The organisation is funded through a combination of license fees paid by adopting agencies and donations from private individuals and charitable foundations.

The challenge

A thousand people suffer from a sudden cardiac arrest everyday in the United States, with less than 11% survival rates. The chances of recovering from such accidents depend heavily on time. Indeed, each minute after a cardiac arrest diminishes chances of survival by 10%.

After a call is placed to an emergency dispatch, it may take several minutes for first responders to reach the person in need. The founders of PulsePoint were looking for a viable solution to bridge that gap between an emergency dispatch call and professional medical response. 

The satellite solution

PulsePoint, which is built and maintained by Workday volunteers, is a mobile application that calls on active citizenship to help save lives and is free to download for any person trained in hands-only cardiopulmonary resuscitation (CPR).

PulsePoint Respond is integrated directly into a communities’ emergency dispatch system. When a cardiac arrest occurs in a public place, it is reported to local emergency services, where emergency dispatchers simultaneously alert professional responders and PulsePoint-carrying, CPR-trained people nearby. The GPS-aware software notifies responders of the patient’s location, in relation to their own location, and identifies any publicly accessible automated external defibrillators nearby. Allowing CPR-trained persons to provide first aid to the cardiac arrest patient before the emergency services arrive.

In addition to life-saving CPR notifications, the application provides a complete virtual window into the emergency communication centres of PulsePoint-enabled agencies. As mobile users have real-time access to emergency activity as it’s occurring in these communities, the application offers a unique opportunity for civic engagement and transparency.

The results

There are more than 2 000 PulsePoint-connected communities in 30 U.S. states with more than one million active users. On average, the application is activated 30 times a day.

Bystander CPR can double or triple a person’s chance of survival. Fifty-seven percent of adults in the U.S. say they have undergone training in cardiopulmonary resuscitation, most often due to work or school requirements. With PulsePoint, any of these people can help save a life.

The application gave my one-month-old son another fighting chance at life.” Michael Garrison, Father of SCA survivor

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Alaska Science Center (ASC) is part of the U.S. Geological Survey (USGS) agency. USGS is the largest water, earth, and biological science and civilian mapping agency in the U.S (10,000 scientists, technicians, and support staff working in 400 different locations).

Headquartered in Anchorage, ASC has studied the dynamics, habitat use, foraging ecology and health of polar bears since 1985. The centre contributes to USGS’s Changing Arctic Ecosystems Initiative, by monitoring the bear population in the Southern Beaufort Sea of Alaska and neighbouring Canada.

The challenge

Shrinking ice caps due to global warming have caused major changes in the Arctic sea ice environment. Polar bears, iconic predators, depend on sea ice for nearly all of their life cycle functions. As an ice-dwelling species, polar bears’ health and behaviour are closely linked to their habitat. Melting sea ice has reduced their hunting ground leading to shorter life-spans and altered maternal denning distribution. Ursus maritimus was listed as a threatened species under the Endangered Species Act (ESA) in 2008. Thus, for biologists each polar bear individual counts.

Because polar bears venture across vast, inaccessible environments, direct observations could only be provided during a small part of the year. Furthermore, counting white bears in a vast white landscape is difficult, expensive and sometimes dangerous.

The satellite solution

To better understand how sea ice decline in the Arctic affects polar bears, USGS scientists use GPS collars to track their behaviour and habits. Each spring 20 GPS collars equipped with satellite telemetry transmitters are fitted on adult female polar bears. The accelerometers on the collars also gather data about the energy needed for the bears to hunt for food (these sensors track the bear’s movement much like a Wii-fit tracks a human’s). Programmed to collect several locations per day, the collars are released automatically after 52 weeks.

However, due to extreme weather conditions, collars sometimes prove unreliable. As the bears are frequently in and out of water, collars occasionally suffer failures in their GPS units. In addition, the bears themselves are tough on the collars and that puts a lot of stress on the components and antennae connections.

So to fill information gaps, biologists are also testing the efficacy of using high-resolution satellite imagery to monitor polar bear numbers and distribution. However, due to cloudiness, the use of EO images remains limited to summer months when areas are snow-free and bears are easier to spot. Despite the challenges in automation and the limited topography in which the method can be effectively applied, improvements in resolution could expand opportunities for future use. Furthermore, compared to the GPS collars, EO data would be less invasive for the bears and safer for humans to use.

The result

As Arctic sea ice continues to retreat at a rate faster than predicted by models, it is urgent to improve estimates of the scale and mechanisms of population responses. Satellite-tracking-informed forecasts are vital in order to raise awareness and advise local, state, national and international policy makers on the conservation efforts needed. USGS has projected a 5% per decade loss of optimal polar bear habitat through the 21st century. Coupled with a decrease in health and reproductive behaviour, it is clear that conservation efforts need to be increased.

The habitat models developed thanks to satellite tracking will in the future be applied to satellite-derived imagery on the extent, composition, and dynamics of sea ice to further improve forecasts on the impacts of climate change on polar bears.

Monitoring wildlife in the Arctic, where the impacts of climate change are acute, is a priority. But working there can be logistically difficult, with some areas too inaccessible to allow for routine assessments of abundance and distribution. We think satellite technology has the potential to open vast, remote regions of the Arctic to regular monitoring. It has tremendous potential to aid the circumpolar management of polar bears.

Todd Atwood,  Research Wildlife Biologist, USGS Alaska Science Center

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